chore: Refactor flyteconsole

[ursucarina]

TL;DR

Added support for custom console components to be injected into flyteconsole without needing to host the code in the flyteconsole codebase.

Type

• Bug Fix
• Feature
• Plugin

Are all requirements met?

• Code completed
• Smoke tested
• Unit tests added
• Code documentation added
• Any pending items have an associated Issue

Complete description

Changed the flyteconsole codebase to separate the main console into ./packages that can be imported into custom implementations.
The flyteconsole app will be deployed from ./website.
For contributing to the codebase, all changes should be made to ./packages/console.

Tracking Issue

fixes https://github.com/flyteorg/flyteconsole/issues/653

[codecov]

Codecov Report

Merging #654 (210adfe) into master (516bbff) will decrease coverage by 0.65%.
The diff coverage is 69.58%.

@@            Coverage Diff             @@
##           master     #654      +/-   ##
==========================================
- Coverage   68.28%   67.62%   -0.66%     
==========================================
  Files         449      452       +3     
  Lines       10714    11194     +480     
  Branches     1849     2059     +210     
==========================================
+ Hits         7316     7570     +254     
- Misses       3398     3624     +226     

Impacted Files	Coverage Δ
...s/console/src/basics/FeatureFlags/defaultConfig.ts	100.00% <ø> (ø)
...ges/console/src/basics/LocalCache/defaultConfig.ts	100.00% <ø> (ø)
packages/console/src/common/constants.ts	100.00% <ø> (ø)
packages/console/src/common/layout.ts	100.00% <ø> (ø)
packages/console/src/common/promiseUtils.ts	0.00% <0.00%> (ø)
packages/console/src/common/setupProtobuf.ts	0.00% <0.00%> (ø)
packages/console/src/common/timer.ts	0.00% <ø> (ø)
packages/console/src/common/typeCheckers.ts	100.00% <ø> (ø)
packages/console/src/components/App/App.tsx	0.00% <0.00%> (ø)
...kages/console/src/components/Cache/CacheContext.ts	100.00% <ø> (ø)
... and 730 more

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