"File Scan" fallback = Hash and Update UI

[chlaplan]

Issue: New-CIPolicy uses the -Fallback level for any file where the primary level can't be determined. Unsigned files have no certificate/publisher info, so the cmdlet falls back to Hash for those files. Without a fallback, unsigned files would be silently skipped and wouldn't get any rule at all.

2. "File Scan" hash is hardcoded as the default fallback, but when you select multiple levels, Hash is dropped from fallbacks. Need to add hash as default fallback
3. Update UI to give admins an understanding what rule is level and fallback.

[chlaplan]

• Excluded folders being checked are still getting added to the XML, seems to be two bugs in the code

1. If only one folder is checked, it won't exclude the folder, has to be > 1, line 306 should be > 0, not > 1.
2. -OmitPaths and -Fallback passed as single string instead of array