A quick fix to handle Issue #9, implement better linting and get an initial pytest check to run.

What's Changed

• Testing by @NebularNerd in #7
• Adding Flake8 linting by @NebularNerd in #8
• Added PyTest, Fixes a line duplication bug with YT live translation .vtt by @NebularNerd in #10

Full Changelog: 2025-02-03...2025-02-08