Added CMD Flags for Additional PHP Extensions and Ignore Patterns

What does this MR do?

This merge request will add two new command line flags / environment variables to the alanyze process.

New Flags

• extensions: Comma seperated list of additional PHP file extensions to pass into the processor
• ignore: Comma seperated list of ignore patterns in RegEx format (See: PHP_CodeSniffer: Ignoring File and Folders)

What are the relevant issue numbers?

Gitlab-EE Issue #216507

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated for GitLab EE, if necessary
  • gitlab-org/gitlab!31034 (merged)
• Documentation created/updated for this project, if necessary
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Job definition updated, if necessary
  • Auto-DevOps template
  • Job definition example
  • CI Templates
• Conforms to the code review guidelines
• Conforms to the Go guidelines
• Security reports checked/validated by reviewer