Add pip code to snippets

[MagicalMeghan]

Adding in snippets for PiP compose documentation

[snippet-bot]

Here is the summary of changes.

You are about to add 14 region tags.

• compose/snippets/src/main/AndroidManifest.xml:31, tag android_compose_pip_manifest_entry
• compose/snippets/src/main/java/com/example/compose/snippets/pictureInPicture/PictureInPictureSnippets.kt:55, tag android_compose_pip_broadcast_receiver_constants
• compose/snippets/src/main/java/com/example/compose/snippets/pictureInPicture/PictureInPictureSnippets.kt:71, tag android_compose_pip_builder_auto_enter
• compose/snippets/src/main/java/com/example/compose/snippets/pictureInPicture/PictureInPictureSnippets.kt:87, tag android_compose_pip_find_activity
• compose/snippets/src/main/java/com/example/compose/snippets/pictureInPicture/PictureInPictureSnippets.kt:100, tag android_compose_pip_button_click
• compose/snippets/src/main/java/com/example/compose/snippets/pictureInPicture/PictureInPictureSnippets.kt:117, tag android_compose_pip_is_in_pip_mode
• compose/snippets/src/main/java/com/example/compose/snippets/pictureInPicture/PictureInPictureSnippets.kt:150, tag android_compose_pip_ui_toggle
• compose/snippets/src/main/java/com/example/compose/snippets/pictureInPicture/PictureInPictureSnippets.kt:169, tag android_compose_pip_toggle_pip_on_if_video_is_playing
• compose/snippets/src/main/java/com/example/compose/snippets/pictureInPicture/PictureInPictureSnippets.kt:178, tag android_compose_pip_release_player
• compose/snippets/src/main/java/com/example/compose/snippets/pictureInPicture/PictureInPictureSnippets.kt:192, tag android_compose_pip_post_12_should_enter_pip
• compose/snippets/src/main/java/com/example/compose/snippets/pictureInPicture/PictureInPictureSnippets.kt:216, tag android_compose_pip_set_source_rect
• compose/snippets/src/main/java/com/example/compose/snippets/pictureInPicture/PictureInPictureSnippets.kt:245, tag android_compose_pip_set_aspect_ratio
• compose/snippets/src/main/java/com/example/compose/snippets/pictureInPicture/PictureInPictureSnippets.kt:272, tag android_compose_pip_broadcast_receiver
• compose/snippets/src/main/java/com/example/compose/snippets/pictureInPicture/PictureInPictureSnippets.kt:320, tag android_compose_pip_add_remote_actions

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[bentrengrove]

Looks like the work from Chris's original review still needs to be done

[bentrengrove]

LGTM thanks for fixing that up