Adding advanced examples

[jakeroseman]

Adding advanced time picker examples.

[snippet-bot]

Here is the summary of changes.

You are about to add 2 region tags.

• compose/snippets/src/main/java/com/example/compose/snippets/components/TimePickers.kt:185, tag android_compose_components_advanced
• compose/snippets/src/main/java/com/example/compose/snippets/components/TimePickers.kt:259, tag android_compose_components_advanceddialog

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