Re-attempt at AnKit modularization

[sadnow]

OOP was something I was originally aiming for. This will require a rewrite of some of the code but will hopefully ultimately be easier to work with.

Commits will be tracked here.

Macrogoals

• [x] Nix method_a and method_b in favor of functions
• [ ] #21
• [ ] #10 (_preserve_in_gdrive)

Microgoals

• [x] Independence from Google Drive - users can instead use an embedded "Upload" form
• [ ] Verify whether real-esrgan's video_inference does anything more than integrate ffmpeg functions
• [ ] #22
• [x] #23
• [ ] toggle for lossless, h264, h265 encoding

[sadnow]

References:

• https://bournetocode.com/projects/AQA_A_Theory/pages/img/oopBike.png
• https://www.datacamp.com/community/tutorials/inner-classes-python