Improve the ability to specify files for analyze

[SkowronskiAndrew]

Currently "Analyze" only supports directory scanning.

• You CAN turn off recursive scanning
• You can specify a simple wildcard

So its possible, but rather awkward specifying a single file like this:

UnityDataTool analyze . -p myactualfilename.bundle

This issue is about extending the support a bit more.

• Ability to specify files from more than one locations (e.g. a build + a buildreport file)
• Simple syntax for the common case of analyzing a single file (perhaps allow instead of ". -p ")
• ...other ideas?