feat(cli, metro-config): implement new unstable_serverRoot feature (#21088)

# Why

- Metro web doesn't work with monorepos because requests that look up
past the project root like `/../../` will

feat(cli, metro-config): implement new unstable_serverRoot feature (#21088)

# Why

- Metro web doesn't work with monorepos because requests that look up
past the project root like `/../../` will be collapsed to `/` which
breaks a number of features.
- Metro added `unstable_serverRoot` which we now automatically set to
the workspace root when `EXPO_USE_METRO_WORKSPACE_ROOT=1` is enabled. If
this works well at scale, we'll enable the feature by default.

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Co-authored-by: Expo Bot <[email protected]>

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[expo-cli] Add platform when running --dev-client (#19319)

* [expo-cli] Add platform when running --dev-client

* updates test

* remove .only

* Use "none" for platform when no platform is pr

[expo-cli] Add platform when running --dev-client (#19319)

* [expo-cli] Add platform when running --dev-client

* updates test

* remove .only

* Use "none" for platform when no platform is provided

* add changelog

* Update error message

* fix unit test

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chore: refactor `expo/cli` to `@expo/cli` package (#16717)

* chore: refactor `expo/cli` to `@expo/cli` package

* Update CODEOWNERS

* fix linking

* fix lint script

* fix build file

* f

chore: refactor `expo/cli` to `@expo/cli` package (#16717)

* chore: refactor `expo/cli` to `@expo/cli` package

* Update CODEOWNERS

* fix linking

* fix lint script

* fix build file

* fix e2e tests

* lint before build

* use mock version

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