Add solution analysis

[molinch]

This would analyze a solution and give information about usages and what can be converted.

Output could be like:

• Shims: 100 occurrences in 80 methods
• Stubs: 700 occurences in 400 methods
• Mixed: 100 methods use both Stubs and Shims
• After conversion: 5 stubs remaining, 695 stubs converted to Moq, 300 methods don't rely on MsTest Fakes dll