Feature/react managed undo

[tomrule007]

Updates #1125

what

Manage undo/redo state for <MdInput/> component (the comment input box) inside of react and bind hotkeys.

why

Using a controlled react input component only preserves native undo/redo functionality when the component is updated with the onChange event handler from the controlled component itself.

Adding more advanced features like

• Auto closing brackets
• List continuation on return
• Markdown style buttons

requires manualing updating the state which in turn wipes out the native undo/redo functionality.

how

• Adds internal state to MdInput to track undo/redo history with 3rd party package useUndo
  • * I chose a separate internal state to not making it any more difficult to use the component or have this abstraction leak outside the component itself.
• Creates hotkeyListener utility to bind new undo/redo functionality over the native key bindings and prevent defaults

Checklist:

• Tests
• Typescript definitions updated
• Ready to be merged

(PS: i took this simple PR template from testing-library/react-testing-library)

[vercel]

@tomrule007 is attempting to deploy a commit to a Personal Account owned by @garageScript on Vercel.

@garageScript first needs to authorize it.

[vercel]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/c0d3/c0d3-app/7gyjj3Z3MoDYPEwcuUpDstbmA83K
✅ Preview: https://c0d3-app-git-fork-tomrule007-feature-react-managed-undo-c0d3.vercel.app

[codecov]

Codecov Report

Merging #1135 (a23f51c) into master (9df2d24) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master     #1135   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          139       141    +2     
  Lines         2223      2263   +40     
  Branches       551       559    +8     
=========================================
+ Hits          2223      2263   +40     

Impacted Files	Coverage Δ
components/MdInput.tsx	100.00% <100.00%> (ø)
helpers/hotkeyListener.ts	100.00% <100.00%> (ø)
components/AppNav.tsx	100.00% <0.00%> (ø)
components/LogoutContainer.tsx	100.00% <0.00%> (ø)