[camera_android] Update README to encourage users to use CameraX implementation (flutter#6353)

Modify README to encourage users to opt into camera_android_camerax to
start ramping up usage before changing it to the default plugin
implementation on Android.

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
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- [ ] I [linked to at least one issue that this PR fixes] in the
description above.
- [x] I updated `pubspec.yaml` with an appropriate new version according
to the [pub versioning philosophy], or this PR is [exempt from version
changes].
- [x] I updated `CHANGELOG.md` to add a description of the change,
[following repository CHANGELOG style].
- [ ] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] All existing and new tests are passing.

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Author: camsim99

packages/camera/camera_android/CHANGELOG.md

@@ -1,7 +1,8 @@
-## NEXT
+## 0.10.8+17
 
 * Updates minimum supported SDK version to Flutter 3.13/Dart 3.1.
 * Updates compileSdk version to 34.
+* Updates `README.md` to encourage developers to opt into `camera_android_camerax`.
 
 ## 0.10.8+16
 

packages/camera/camera_android/README.md

@@ -2,6 +2,12 @@
 
 The Android implementation of [`camera`][1].
 
+*Note*: [`camera_android_camerax`][3] will become the default implementation of
+`camera` on Android by May 2024, so **we strongly encourage you to opt into it**
+by using [these instructions][4]. If any [limitations][5] of `camera_android_camerax`
+prevent you from using it or if you run into any problems, please report these
+issues under [`flutter/flutter`][5] with `[camerax]` in the title.
+
 ## Usage
 
 This package is [endorsed][2], which means you can simply use `camera`
@@ -13,3 +19,6 @@ should add it to your `pubspec.yaml` as usual.
 
 [1]: https://pub.dev/packages/camera
 [2]: https://flutter.dev/docs/development/packages-and-plugins/developing-packages#endorsed-federated-plugin
+[3]: https://pub.dev/packages/camera_android_camerax
+[4]: https://pub.dev/packages/camera_android_camerax#usage
+[5]: https://pub.dev/packages/camera_android_camerax#limitations

packages/camera/camera_android/pubspec.yaml

@@ -3,7 +3,7 @@ description: Android implementation of the camera plugin.
 repository: https://github.com/flutter/packages/tree/main/packages/camera/camera_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+camera%22
 
-version: 0.10.8+16
+version: 0.10.8+17
 
 environment:
   sdk: ^3.1.0