Added a parameter to exclude lines that start with specific words.

** Ready for Review **

Added a **ignoreStartsWithLineLength** option to the A24StudioCS ruleset.xml that is implemented by LineLenghtSniff. It excludes lines that starts with specific **words** (must end with word boundary) from the LineLength rule. 

** Testing Instructions **

- [ ] Add (or find) a 'use' statement that exceeds 120 characters (see issue) and run **phpcs** against it. It should fail.
- [ ] Update code sniffer with these changes and the test should now pass.

Issue #5579
https://github.com/A24Group/Triage/issues/5579