feat: adds Grid with LazyColumn snippets

[prateekbatra-g]

• Adds android_compose_grid_with_lazy_column_setup snippet region defining grid areas and configuration
• Adds android_compose_grid_with_lazy_column snippet region to demonstrate integrating LazyColumn within a Grid layout area

[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/layouts/grid/GridByExamples.kt:345, tag android_compose_grid_with_lazy_column_setup
• compose/snippets/src/main/java/com/example/compose/snippets/layouts/grid/GridByExamples.kt:367, tag android_compose_grid_with_lazy_column

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