FAQ and general documentation updates

[BernieWhite]

We could do better clearly answering these questions in documentation:

• [ ] What's the different between ps-rule.yaml and baselines?
• [ ] Can baselines and ps-rule.yaml be used together?
• [x] How do I disable or suppress the * has not be processed warning message?
• [ ] What is the purpose of inputType pipeline parameter?
• [ ] How should I use the inputPath pipeline parameter?
• [ ] What configuration should I used for scanning a repository of templates or bicep code?
• [x] Why are not rules processed?
• [x] Exclude bicepconfig.json.
• [x] Exclude other files.

Also link from troubleshooting as well for questions that might seem an issue.