`react` and `react-dom` should always be peer dependencies of packages that provide react components to ensure that there's a single instance of those.

Plus, all packages depending on a package with `react` as peerDep should also have it as peerDeps (transitive peer dependencies) or as deps.

Finally, packages in `examples/*` are "end" packages using Storybook so they must provide `react` and `react-dom` in their deps/devDeps

… with examples/official-storybook

Example:
ERR! SyntaxError: /tmp/storybook/examples/official-storybook/stories/notes/notes.md: pragma and pragmaFrag cannot be set when runtime is automatic.

These deps need to be explicitly added as they are peerDeps of SB packages now.

…ct Hooks

I used `16.13.1` as it looks there are, for now, some issue between 16.14.x and `addons-docs`

- Set `react` and `react-dom` as peerDeps for all `lib` packages needing them
- Set `react` and `react-dom` as peerDeps + optional tag for all `addon` packages needing them
- Set `react` and `react-dom` as regular deps for all non react apps
- Remove `react` and `react-dom` from root `package.json`
- Set a fixed version of `react` in all examples

Also:
- Use "^16.8.0 || ^17.0.0" version range as some packages need React Hooks

They are now regular deps of SB packages for all non-react app so there is no more need to add them explicitly.