feat(cli,router): support src/app directory in Expo Router (#22748)

# Why

- related https://github.com/expo/router/pull/629

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feat(cli,router): support src/app directory in Expo Router (#22748)

# Why

- related https://github.com/expo/router/pull/629

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# How

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# Test Plan

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# Checklist

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- [ ] Documentation is up to date to reflect these changes (eg:
https://docs.expo.dev and README.md).
- [ ] Conforms with the [Documentation Writing Style
Guide](https://github.com/expo/expo/blob/main/guides/Expo%20Documentation%20Writing%20Style%20Guide.md)
- [ ] This diff will work correctly for `npx expo prebuild` & EAS Build
(eg: updated a module plugin).

---------

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

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feat(cli, metro-config): environment variable support (#21983)

# Why

- It's nice to be able to use uncommitted values in your app, based on
the environment. This feels very familiar to web devel

feat(cli, metro-config): environment variable support (#21983)

# Why

- It's nice to be able to use uncommitted values in your app, based on
the environment. This feels very familiar to web developers.
- Values that are prefixed with `EXPO_PUBLIC_` will be inlined in the
bundle when bundling normally (e.g. not for Node.js).
- `.env` files are loaded into memory and applied to the process during
a run. This also means that they're available in `app.config.js`.
- During development-only, environment variables are exposed on the
`process.env` object (non-enumerable) to ensure they're available
between fast refresh updates.
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# How

- Create new package `@expo/env` which is used to hydrate env variables
in a unified way. I plan to open another PR in `eas-cli` which uses this
package to fill in environment variables before uploading. NOTE:
environment variables that are defined in eas.json are not available in
Expo CLI when building locally, but are available in the cloud since
they'll be on the process, this means they effectively emulate
`.env.production`.
- Update templates to gitignore local env files.
- Add basic documentation to the versioned metro guide (more to come).


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# Test Plan

- [ ] E2E rendering test
- [ ] E2E Node.js rendering test
- [x] Unit tests for serializer
- [x] Tests for env package

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tests! If possible, please also provide terminal output and/or
screenshots demonstrating your test/reproduction.
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# Checklist

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Please check the appropriate items below if they apply to your diff.
This is required for changes to Expo modules.
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- [ ] Documentation is up to date to reflect these changes (eg:
https://docs.expo.dev and README.md).
- [ ] Conforms with the [Documentation Writing Style
Guide](https://github.com/expo/expo/blob/main/guides/Expo%20Documentation%20Writing%20Style%20Guide.md)
- [ ] This diff will work correctly for `expo prebuild` & EAS Build (eg:
updated a module plugin).

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feat(cli): add touch middleware and app entry (#19231)

* add middleware for creating files

* fix touch request

* added support for auto entry

* added tests for touch middleware

* added r

feat(cli): add touch middleware and app entry (#19231)

* add middleware for creating files

* fix touch request

* added support for auto entry

* added tests for touch middleware

* added router tests

* Update CHANGELOG.md

* Update packages/@expo/cli/CHANGELOG.md

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

* Update instantiateMetro.ts

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

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