Refactor CLI handling

[steinerkelvin]

• use make_custom_context in all CLI command functions, like in save
• all output and input goes through the CustomCtx interface
• all informative and error outputs go to stderr, such that that relevant output can be parsed (specially on JSON output mode)
• disable colors and input on non-interactive shells/scripts/etc
• JSON output option for all commands

[Bakobiibizo]

I started working on error handling which is related to this but not exactly what the post requests. Let me know if I should make a separate issue.
Currently have

• custom exception classes
• added a logger sink to a file
  Planning to
• add a default error to incorrect cli inputs that just displays the help menu you're currently on. Saves you from having to the type --help everytime to see the menu since the messaging is verbose in this application and its inconvenient to scroll up.

[steinerkelvin]

@Bakobiibizo

I think the library should not be writing log files by default, but I appreciate it if this is a feature gated by an environment variable.

Open at least a PR draft, so I can view your changes already plz