Merge pull request dotnet#5613 from ostorc/rarAsService/node

This PR provides MSBuild necessary infrastructure to start up new RAR node and connect to it.

Implements dotnet#5555

Suggestion to parse solution when projects have similar names (dotnet…

…#5367)

Created a fix to detect collision caused by a unique project name's normalization, reported on issue dotnet#3019

Fixes dotnet#3019

Final branding for 16.8 (dotnet#5545)

Final branding_16.6 (dotnet#5273)

Merge pull request dotnet#5257 from Forgind/fix-nuget-problem

Replace Framework references

Final branding 16.5 (dotnet#5136)

Final branding for vs16.4 (dotnet#4908)

Hardcode channel-publish repo name (dotnet#4799)

Work around dotnet/arcade#4087 by hardcoding the repo name in the one channel relevant to 16.3 servicing.

RTM branding for 16.3.1 (dotnet#4774)

Drop -preview for 16.3 (dotnet#4684)