New Sections for .NET Core stuff (#5327)

* New Sections for .NET Core stuff

- Added 2 new sections: ASP.NET Core and .NET Core
- Added books to respective new sections, including from Microsoft Docs
- Blazor is now under ASP.NET Core Section

For issue - https://github.com/EbookFoundation/free-programming-books/issues/5326

* Fixed formatting and alphabetical ordering

books/free-programming-books.md

@@ -8,6 +8,8 @@
 * [APL](#apl)
 * [Arduino](#arduino)
 * [ASP.NET](#aspnet)
+* [ASP.NET Core](#aspnet-core)
+  * [Blazor](#blazor)
 * [Assembly Language](#assembly-language)
   * [Non-X86](#non-x86)
 * [AutoHotkey](#autohotkey)
@@ -16,7 +18,6 @@
 * [Bash](#bash)
 * [Basic](#basic)
 * [BETA](#beta)
-* [Blazor](#blazor)
 * [C](#c)
 * [C#](#c-sharp)
 * [C++](#cpp)
@@ -161,6 +162,7 @@
 * [Modelica](#modelica)
 * [MySQL](#mysql)
 * [Neo4J](#neo4j)
+* [.NET Core / .NET](#net-core)
 * [.NET Framework](#net-framework)
 * [Nim](#nim)
 * [NoSQL](#nosql)
@@ -1008,16 +1010,27 @@ Kerridge (PDF) (email address *requested*, not required)
 ### ASP.NET
 
 * [Architecting Modern Web Applications with ASP.NET Core and Microsoft Azure (2020)](https://aka.ms/webappebook) - Steve "ardalis" Smith (PDF) (:construction: *in process*)
-* [ASP.NET Core 2 Succinctly](https://www.syncfusion.com/ebooks/aspnet-core-2-succinctly) - Simone Chiaretta, Ugo Lattanzi
 * [ASP.NET MVC Music Store](http://mvcmusicstore.codeplex.com)
 * [ASP.NET WebHooks Succinctly](https://www.syncfusion.com/ebooks/aspnet_webhooks_succinctly) - Gaurav Arora
 * [ASP.NET with C# (2008)](http://www.vijaymukhi.com/documents/books/vsnet/content.htm) - Vijay Mukhi, Sonal Mukhi, Neha Kotecha
 * [Diving into ASP.NET WebAPI (2016)](https://github.com/akhilmittal/FreeBooks/) - Akhil Mittal (PDF)
 * [Intro to ASPNET MVC 4 with Visual Studio 2011 Beta (2012)](http://download.microsoft.com/download/0/f/b/0fbfaa46-2bfd-478f-8e56-7bf3c672df9d/intro%20to%20asp.net%20mvc%204%20with%20visual%20studio%20-%20beta.pdf) - Rick Anderson and Scott Hanselman (PDF)
 * [Introducing ASP.NET Web Pages 2 (2012)](https://download.microsoft.com/download/0/F/B/0FBFAA46-2BFD-478F-8E56-7BF3C672DF9D/Introducing%20ASP.NET%20Web%20Pages%202.pdf) - Mike Pope (PDF)
+
+
+### ASP.NET Core
+
+* [ASP.NET Core 3.1 Succinctly](https://www.syncfusion.com/succinctly-free-ebooks/asp-net-core-3-1-succinctly) - Simone Chiaretta, Ugo Lattanzi
+* [ASP.NET Core Documentation - Microsoft Docs](https://docs.microsoft.com/en-us/aspnet/core/?view=aspnetcore-5.0)
 * [The Little ASP.NET Core Book (2018)](https://s3.amazonaws.com/recaffeinate-files/LittleAspNetCoreBook.pdf) - Nate Barbettini (PDF)
 
 
+#### Blazor
+
+* [Blazor: A Beginner's Guide](https://www.telerik.com/campaigns/blazor/wp-beginners-guide-ebook) - Ed Charbeneau (PDF) (email address *requested*, not required)
+* [Blazor for ASP.NET Web Forms Developers](https://dotnet.microsoft.com/download/e-book/blazor-for-web-forms-devs/pdf) - Daniel Roth, Jeff Fritz, Taylor Southwick (PDF)
+
+
 ### Assembly Language
 
 * [ARM Assembly Language Programming](http://www.rigwit.co.uk/ARMBook/ARMBook.pdf) - Peter Knaggs (PDF) (:construction: *in process*)
@@ -1103,12 +1116,6 @@ Kerridge (PDF) (email address *requested*, not required)
 * [Object-Oriented Programming in the BETA Programming Language](https://beta.cs.au.dk/Books/) - Ole Lehrmann Madsen, Birger Møller-Pedersen, Kristen Nygaard
 
 
-### Blazor
-
-* [Blazor: A Beginner's Guide](https://www.telerik.com/campaigns/blazor/wp-beginners-guide-ebook) - Ed Charbeneau (PDF) (email address *requested*, not required)
-* [Blazor for ASP.NET Web Forms Developers](https://dotnet.microsoft.com/download/e-book/blazor-for-web-forms-devs/pdf) - Daniel Roth, Jeff Fritz, Taylor Southwick (PDF)
-
-
 ### C
 
 * [256-Color VGA Programming in C](http://www.brackeen.com/vga/) - David Brackeen
@@ -2148,14 +2155,20 @@ Kerridge (PDF) (email address *requested*, not required)
 * [Graph Databases For Dummies](https://neo4j.com/graph-databases-for-dummies/) - Dr. Jim Webber and Rik Van Bruggen (PDF) *(email requested)*
 
 
+### .NET Core
+
+* [Clean Code .NET](https://github.com/thangchung/clean-code-dotnet)
+* [Entity Framework Core Succinctly](https://www.syncfusion.com/succinctly-free-ebooks/entity-frame-work-core-succinctly) - Ricardo Peres
+* [.NET documentation - Microsoft Docs](https://docs.microsoft.com/en-us/dotnet/)
+* [Using .NET Core, Docker, and Kubernetes Succinctly](https://www.syncfusion.com/ebooks/using-netcore-docker-and-kubernetes-succinctly) - Michele Aponte
+
+
 ### .NET Framework
 
 * [Akka.NET Succinctly](https://www.syncfusion.com/ebooks/akka_net_succinctly) - Zoran Maksimovic
 * [Application Security in .NET Succinctly](https://www.syncfusion.com/ebooks/application_security_in_net_succinctly) - Stan Drapkin
-* [Clean Code .NET](https://github.com/thangchung/clean-code-dotnet)
 * [Cryptography in .NET Succinctly](https://www.syncfusion.com/ebooks/cryptography_in_net_succinctly) - Dirk Strauss
 * [Entity Framework](http://weblogs.asp.net/zeeshanhirani/my-christmas-present-to-the-entity-framework-community)
-* [Entity Framework Core Succinctly](https://www.syncfusion.com/ebooks/entity_frame_work_core_succinctly) - Ricardo Peres
 * [Game Creation with XNA](https://en.wikibooks.org/wiki/Game_Creation_with_XNA) - Wikibooks
 * [Getting the Most from LINQPad Succinctly](https://www.syncfusion.com/ebooks/getting-the-most-from-linqpad-succinctly) - José Roberto Olivas Mendoza
 * [MonoGame Succinctly](https://www.syncfusion.com/ebooks/monogame_succinctly) - Jim Perry
@@ -2165,7 +2178,6 @@ Kerridge (PDF) (email address *requested*, not required)
 * [NuGet In-House Succinctly](https://www.syncfusion.com/ebooks/nuget-in-house-succinctly) - José Roberto Olivas Mendoza
 * [Rider Succinctly](https://www.syncfusion.com/ebooks/rider-succinctly) - Dmitri Nesteruk
 * [Under the Hood of .NET Memory Management](https://assets.red-gate.com/community/books/under-the-hood-of-net-memory-management.pdf) - Chris Farrell, Nick Harrison (PDF)
-* [Using .NET Core, Docker, and Kubernetes Succinctly](https://www.syncfusion.com/ebooks/using-netcore-docker-and-kubernetes-succinctly) - Michele Aponte
 * [Visual Studio .NET Tips and Tricks](http://www.infoq.com/minibooks/vsnettt) (VS 2003-2005 only)
 * [Visual Studio 2019 Succinctly](https://www.syncfusion.com/ebooks/visual-studio-2019-succinctly) - Alessandro Del Sole