docs: Incorporate docs into monorepo

[patrycjakalinska]

Summary

More well-organized and sorted version of #8298

This PR adds docs as a part of monorepo ecosystem, and makes them use yarn v4.

To-do:

• fix ymls
• check if docs publish CI needs to be updated - probably not as it worked locally, but needs to make sure react-native-reanimated is not needed to be build beforehand
• precommit
• linting CIs

Test plan

Run yarn start in both monorepos. IMPORTANT! Also run yarn build && yarn serve in reanimated - it won't work in worklets as worklet documentation is done using some special under the table tricks to make it possible for two docs to work in one monorepo. Take a look at CIs changes, as well as new build path of docs.

[tjzel]

Please also make amendments to linting CIs and precommit scripts.

[patrycjakalinska]

most of the changes in the CIs were 'cause of importing Reanimated and Worklets directly from monorepo, when we use stable versions from npm we no longer need these additional steps.

[tjzel]

Good job!