File Searching by Pattern

[AstroPatty]

• Add regex matching for multiple files
• Add get_files to project
• Create the searching handler
• Allow file getting handler to return several files
• Initial test working
• Fix docker to avooid re-compiling when Python parts changes
• Some error QOL updates
• Add logging to pattern matching
• More consistent logging
• More logging
• Last logging commit for now
• Big updates to tests
• Unify handler interface