New build and foundation to finish angular migration

[seanfeld]

Build Updates

-- gigantic pr strategy for merging it - will keep a separate branch to continue doing bug fixes and to keep it separate from the release branches until its stable. I will keep that branch up to date with develop

-- there are still a lot of bugs, which I will be addressing and keeping track of

yarn 3 is required to use this - it also uses yarn's plug and play. yarn install will be slower but every subsequent yarn add etc will be faster. The initial webpack builds will seem slower but they rebuild faster and have type checking

Description

• yarn 3
• typescript linting
• typescript checking
• typescript type updates
• file conversions (ts, tsx, jsx etc)
• remove dependency on gulp (haven't removed gulp dependencies yet)
• webpack 5
• react flow
• dependency updates
• unify webpack (yarn run old, yarn cdap-dev-build-w, yarn start) - eventually when angular is removed we won't need yarn run old
• prettier config

tons of other changes

-- known issues styling - some styling is still off due to the page structure being different studio page - there is a bug where it won't load fully until you add a node details page - ui position is off on load

PR Type

• [x] Bug Fix
• [x] Feature
• [x] Build Fix
• [ ] Testing
• [x] General Improvement
• [ ] Cherry Pick

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