Add variable font snippets

[riggaroo]

[snippet-bot]

Here is the summary of changes.

You are about to add 9 region tags.

• compose/snippets/src/main/java/com/example/compose/snippets/text/VariableFontsSnippets.kt:44, tag android_compose_text_variable_fonts_define
• compose/snippets/src/main/java/com/example/compose/snippets/text/VariableFontsSnippets.kt:61, tag android_compose_text_variable_fonts_fallback
• compose/snippets/src/main/java/com/example/compose/snippets/text/VariableFontsSnippets.kt:99, tag android_compose_text_variable_fonts_extracted_settings
• compose/snippets/src/main/java/com/example/compose/snippets/text/VariableFontsSnippets.kt:151, tag android_compose_text_variable_fonts_typography
• compose/snippets/src/main/java/com/example/compose/snippets/text/VariableFontsSnippets.kt:277, tag android_compose_variable_fonts_use_theme
• compose/snippets/src/main/java/com/example/compose/snippets/text/VariableFontsSnippets.kt:286, tag android_compose_variable_fonts_usage
• compose/snippets/src/main/java/com/example/compose/snippets/text/VariableFontsSnippets.kt:327, tag android_compose_variable_font_custom_axes
• compose/snippets/src/main/java/com/example/compose/snippets/text/VariableFontsSnippets.kt:370, tag android_compose_variable_font_custom_axis_usage
• compose/snippets/src/main/java/com/example/compose/snippets/tooling/AndroidStudioComposeSnippets.kt:179, tag android_compose_tooling_preview_annotation

You are about to delete 1 region tag.

• compose/snippets/src/main/java/com/example/compose/snippets/tooling/AndroidStudioComposeSnippets.kt:178, tag android_compose_tooling_preview_annotation

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