Add file filter to exclude folder

[jma-ludiverso]

With some projects, for example xamarin projects, scanning from Visual Studio Extension adds folders that aren't needed in checkmarx validation and should be excluded, for example obj/debug folder. Results from the scan throw more errors than errors result from pipeline execution from repositories.

Proposed solution is to include in the extension toolbar a textbox to optionally indicate a folder to exclude from scan. In case a folder is indicated for exclusion, and additional parameter (CxConstants.FLAG_FILE_FILTER) will be added before calling to scancreate function.

Checking for gitignore file configuration could be an alternative solution.