Migrate to a monorepo

[piotr-roslaniec]

To Do

• Configure changesets for package release management
• Update examples with pre and taco modules. Use TS and typecheck in examples.
• Fix exports field in package.json (currently breaks tests in packages/taco
• Update *.md files
• Make sure examples are getting built, tested, etc. on CI
• Revisit WASM packaging
• Revisit module build
• Figure out the structure of the pre package, similarly to taco package
• Take advantage of peerDependencies
• ...

Type of PR:

• Documentation
• Refactor
• Other

Required reviews:

• 3

What this does:

• Creates a workspace for the monorepo structure with shared, pre and taco packages
• Configures pnpm as a package manager
• Reworks linting, docs generating, and other utilities
• Replaces jest with vitest
• ethers-contracts generated by typechain are no longer stored in the repo

Issues fixed/closed:

• Fixes #...

Why it's needed:

Explain how this PR fits in the greater context of the NuCypher Network.
E.g., if this PR address a nucypher/productdev issue, let reviewers know!

Notes for reviewers:

• This is a work in progress
• Consider adding nucypher-ts demos (like https://github.com/nucypher/nucypher-ts-demo-tdec) as examples in ./apps
• Consider moving refactoring of ./packages/* into a separate PR (functional vs OOO/character-based API)
• Do we want ./examples to use taco or pre, or both?

[codecov-commenter]

Codecov Report

Merging #294 (59bd4a8) into alpha (8f1dcf1) will decrease coverage by 81.26%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##            alpha    #294       +/-   ##
==========================================
- Coverage   81.25%   0.00%   -81.26%     
==========================================
  Files          36      40        +4     
  Lines        1035    1074       +39     
  Branches      110     117        +7     
==========================================
- Hits          841       0      -841     
- Misses        186    1019      +833     
- Partials        8      55       +47     

Files Changed	Coverage Δ
packages/nucypher-ts/src/characters/alice.ts	0.00% <0.00%> (ø)
packages/nucypher-ts/src/characters/bob.ts	0.00% <0.00%> (ø)
...ckages/nucypher-ts/src/characters/cbd-recipient.ts	0.00% <0.00%> (ø)
packages/nucypher-ts/src/characters/enrico.ts	0.00% <0.00%> (ø)
...ckages/nucypher-ts/src/characters/pre-recipient.ts	0.00% <0.00%> (ø)
...ckages/nucypher-ts/src/conditions/base/contract.ts	0.00% <ø> (ø)
packages/nucypher-ts/src/conditions/base/index.ts	0.00% <ø> (ø)
packages/nucypher-ts/src/conditions/base/rpc.ts	0.00% <ø> (ø)
packages/nucypher-ts/src/conditions/base/shared.ts	0.00% <ø> (ø)
packages/nucypher-ts/src/conditions/base/time.ts	0.00% <ø> (ø)
... and 30 more

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