[benchmark] Add BLE raw advertisement proto encode benchmarks (#15289)

tests/benchmarks/components/api/__init__.py

@@ -1,3 +1,4 @@
+import esphome.codegen as cg
 from tests.testing_helpers import ComponentManifestOverride
 
 
@@ -5,3 +6,16 @@ def override_manifest(manifest: ComponentManifestOverride) -> None:
     # api must run its to_code to define USE_API, USE_API_PLAINTEXT,
     # and add the noise-c library dependency.
     manifest.enable_codegen()
+
+    original_to_code = manifest.to_code
+
+    async def to_code(config):
+        await original_to_code(config)
+        # Enable BLE proto message types for benchmarks.  The real
+        # bluetooth_proxy component is ESP32-only; a lightweight stub
+        # header in tests/benchmarks/stubs/ satisfies the include.
+        cg.add_define("USE_BLUETOOTH_PROXY")
+        cg.add_define("BLUETOOTH_PROXY_MAX_CONNECTIONS", 3)
+        cg.add_define("BLUETOOTH_PROXY_ADVERTISEMENT_BATCH_SIZE", 16)
+
+    manifest.to_code = to_code