Improve restore error messages in source mapping scenarios

[nkolev92]

Bug

Fixes: NuGet/Home#11385

Regression? Last working version:

Description

Some failure scenarios, in particular, NU1100, NU1101, NU1102, NU1103 relate to not being able to resolve a certain package from sources.
PackageSourceMapping filters some of those sources.

This changes adds extra details in those scenarios in source mapping scenarios, where appropriate (ie. source mapping filtered out some sources).

NU1100

Before:

  C:\Code\Temp\NU1000SourceMapping\NU1000SourceMapping.csproj : error NU1100: Unable to resolve 'NuGet.VersioningBla (>= 6.0.0)' for 'net6.0'.

After:

  C:\Code\Temp\NU1000SourceMapping\NU1000SourceMapping.csproj : error NU1100: Unable to resolve 'NuGet.VersioningBla (>= 6.0.0)' for 'net6.0'. PackageSourceMapping is enabled, the following source(s) were not considered: nuget, nuget-bu
ild.

NU1101

Before:

C:\Code\Temp\NU1000SourceMapping\NU1000SourceMapping.csproj : error NU1101: Unable to find package NuGet.VersioningBla. No packages exist with this id in source(s): nuget-build

After:

  C:\Code\Temp\NU1000SourceMapping\NU1000SourceMapping.csproj : error NU1101: Unable to find package NuGet.VersioningBla. No packages exist with this id in source(s): nuget-build. PackageSourceMapping is enabled, the following source(s)
 were not considered: nuget.

NU1102

NU1103 works the same way.

Before:

  C:\Code\Temp\NU1000SourceMapping\NU1000SourceMapping.csproj : error NU1102: Unable to find package NuGet.Versioning with version (= 6.0.0-preview.14)
C:\Code\Temp\NU1000SourceMapping\NU1000SourceMapping.csproj : error NU1102:   - Found 3684 version(s) in nuget-build [ Nearest version: 6.0.0-rc.235 ]

After:

  C:\Code\Temp\NU1000SourceMapping\NU1000SourceMapping.csproj : error NU1102: Unable to find package NuGet.Versioning with version (= 6.0.0-preview.14)
C:\Code\Temp\NU1000SourceMapping\NU1000SourceMapping.csproj : error NU1102:   - Found 3684 version(s) in nuget-build [ Nearest version: 6.0.0-rc.235 ]
C:\Code\Temp\NU1000SourceMapping\NU1000SourceMapping.csproj : error NU1102:   - Versions from nuget were not considered

PR Checklist

• PR has a meaningful title

• PR has a linked issue.

• Described changes

• Tests

  • Automated tests added
  • OR
  • Test exception
  • OR
  • N/A

• Documentation

  • Documentation PR or issue filled - https://github.com/NuGet/docs.microsoft.com-nuget/issues/2571
  • OR
  • N/A

[ghost]

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