Work CI-CD

- Rename projects and their paths to match nuspec files.
- Add empty dirs to keep solution.
- Migrate solution to VS2022.

***NO_CI***

Author: nfbot

nanoFramework.System.Net.Http.Client/Http/.gitkeep

@@ -1,13 +1,12 @@
-
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.28010.2041
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.32014.148
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{11A8DD76-328B-46DF-9F39-F559912D0360}") = "System.Net.Http", "nanoFramework.System.Net.Http\System.Net.Http.nfproj", "{C3ABA656-9831-4006-A3B3-EA842A3C508E}"
 EndProject
-Project("{11A8DD76-328B-46DF-9F39-F559912D0360}") = "System.Net.Http-client", "nanoFramework.System.Net.Http-client\System.Net.Http-client.nfproj", "{6C6EE1B2-20F0-4F0E-8085-7ECD1E692567}"
+Project("{11A8DD76-328B-46DF-9F39-F559912D0360}") = "System.Net.Http.Client", "nanoFramework.System.Net.Http.Client\System.Net.Http.Client.nfproj", "{6C6EE1B2-20F0-4F0E-8085-7ECD1E692567}"
 EndProject
-Project("{11A8DD76-328B-46DF-9F39-F559912D0360}") = "System.Net.Http-server", "nanoFramework.System.Net.Http-server\System.Net.Http-server.nfproj", "{3B91A15A-40B1-4D57-93F2-EB96AF0E7949}"
+Project("{11A8DD76-328B-46DF-9F39-F559912D0360}") = "System.Net.Http.Server", "nanoFramework.System.Net.Http.Server\System.Net.Http.Server.nfproj", "{3B91A15A-40B1-4D57-93F2-EB96AF0E7949}"
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{B16B2D5D-9C42-4042-88E4-F85A52CFDCB4}"
 	ProjectSection(SolutionItems) = preProject