Add a config file to the project

[cwlowder]

We need to be able to add custom configuration options to our project as per @lpulley's suggestion #41 (comment)

[lpulley]

Config ideas:

• use no frame (console canvas only)
• use a Windows-looking frame (for people who prefer a Windows style frame)
• enable/disable hotkey transcript/subtitles
• enable/disable voiceover & volume
• enable/disable showing cursor, selections in video
• enable/disable copying URL to clipboard after upload

[cwlowder]

I'd also like an option to provide a file path to a custom frame... but that might take some work.
It also might be cool to chose from the various recording options we made(desktopCapturer, ffmpeg, etc)
And I'd like to be able to chose output format like mp4, webm, gif, etc