Add VB.NET support

[pavel-mikula-sonarsource]

Fixes #100

Review per commit should be easier. There are some cleanups in the way. This should be rebased after the dependencies are merged, so the FluentAssertion commit goes away

Basically, the minimum was:

• Add language parameter
• Use "vbnet" as a SQ repository key

That's it. Everything else was already implemented and unused.

I've tested it with locally created NuGet against SQ 9.9 and 10.5.1

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
95.8% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud