[audio_file] New component for embedding files into firmware (#14434)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: pre-commit-ci-lite[bot] <117423508+pre-commit-ci-lite[bot]@users.noreply.github.com>
Co-authored-by: J. Nick Koston <nick@koston.org>

tests/components/audio_file/common.yaml

@@ -0,0 +1,5 @@
+audio_file:
+  - id: test_audio
+    file:
+      type: local
+      path: $component_dir/test.wav

tests/components/audio_file/test.esp32-idf.yaml

@@ -0,0 +1 @@
+<<: !include common.yaml