Doc improvements

[Lee-W]

Description

• docs: initial documentation for undocumented commands
• docs: fix missing links, reorganize documentation and replace command help messages with images

Checklist

• [ ] Add test cases to all the changes you introduce
• [ ] Run ./scripts/format and ./scripts/test locally to ensure this change passes linter check and test
• [ ] Test the changes on the local machine manually
• [x] Update the documentation for the changes

Expected behavior

all the commands now gots a simple page and all the usage text has been changed to use image

Steps to Test This Pull Request

Additional context

next step: we'll need to generate the images automatically and check if there's difference. If so, these images should be updated.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.54%. Comparing base (120d514) to head (bbcbf03). Report is 309 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1086      +/-   ##
==========================================
+ Coverage   97.33%   97.54%   +0.20%     
==========================================
  Files          42       55      +13     
  Lines        2104     2486     +382     
==========================================
+ Hits         2048     2425     +377     
- Misses         56       61       +5     

Flag	Coverage Δ
unittests	97.54% <ø> (+0.20%)	:arrow_up:

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[Lee-W]

This change is more than welcome !!! Manually maintaining cli helps is way too much work !

Tricks I learned from Airflow haha