Update libraries solution and NuGet.config files

[ViktorHofer]

Commit 1: Updating slngen to latest version and its invocation.
Commit 2: Update the NuGet.config files
Commit 3: Update solution files with slngen

2 and 3 were done with this command: dotnet build src\libraries\slngen.proj.

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Issue Details

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1. Updating slngen to latest version and its invocation.
2. Update the NuGet.config files
3. Update solution files with slngen

2 and 3 were done with this command: dotnet build src\libraries\slngen.proj.

Author:	ViktorHofer
Assignees:	-
Labels:	area-Infrastructure-libraries
Milestone:	-

[ericstj]

LGTM. Please spot-check the common SLN's that are most used (EG: Microsoft.Extensions.Logging, System.Text.Json, System.Runtime, etc)

I'll pull this and do the same.

[ViktorHofer]

LGTM. Please spot-check the common SLN's that are most used (EG: Microsoft.Extensions.Logging, System.Text.Json, System.Runtime, etc)

Already did locally while they were generated. Didn't see anything standing out but a second pair of eyes are appreciated :)