Add doppelganger test to all analyzers

[MattKotsenas]

NoConstructorArgumentsForInterfaceMockAnalyzerTests has a doppleganger test to ensure that it doesn't flag a user's class that happens to also be named Mock<T>. We should:

1. Expand this scenario to cover all analyzers (probably with extended TestData?)
2. Ensure we cover all the entrypoints to Moq