[dev-client] Use the new autolinking instead of the one from RN (#15379)

# Why

Closes ENG-2317
Closes ENG-1695

# How

- Moved `podspec` to `ios` directory (required by our auto-linking).
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[dev-client] Use the new autolinking instead of the one from RN (#15379)

# Why

Closes ENG-2317
Closes ENG-1695

# How

- Moved `podspec` to `ios` directory (required by our auto-linking).
- Restructured `expo-dev-menu` codebase on ios to work with a new location of `podspec`.
- `dependecies.js` is exporting an empty object.
- Added `expo` as a dependency of `dev` packages.
- Changed how modules are exported on Android (This will be refactored in the future, but for now this should be good enough).

# Test Plan

- bare-expo ✅
- fresh app with `expo-updates installed ✅

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