Add benchmark for processing raw ble messages (#624)

.coveragerc

@@ -4,6 +4,7 @@ source = aioesphomeapi
 omit =
     aioesphomeapi/api_options_pb2.py
     aioesphomeapi/api_pb2.py
+    bench/*.py
 
 [report]
 # Regexes for lines to exclude from consideration

bench/raw_ble_plain_text.py

@@ -0,0 +1,54 @@
+import io
+import timeit
+
+from aioesphomeapi._frame_helper import APIPlaintextFrameHelper
+from aioesphomeapi._frame_helper.plain_text import _cached_varuint_to_bytes
+from aioesphomeapi.api_pb2 import (
+    BluetoothLERawAdvertisement,
+    BluetoothLERawAdvertisementsResponse,
+)
+
+# cythonize -X language_level=3 -a -i aioesphomeapi/_frame_helper/plain_text.py
+# cythonize -X language_level=3 -a -i aioesphomeapi/_frame_helper/base.py
+
+adv = BluetoothLERawAdvertisementsResponse()
+fake_adv = BluetoothLERawAdvertisement(
+    address=1,
+    rssi=-86,
+    address_type=2,
+    data=(
+        b"6c04010134000000e25389019500000001016f00250000002f6f72672f626c75"
+        b"657a2f686369302f64656c04010134000000e25389019500000001016f002500"
+        b"00002f6f72672f626c75657a2f686369302f6465"
+    ),
+)
+for i in range(5):
+    adv.advertisements.append(fake_adv)
+
+type_ = 93
+data = adv.SerializeToString()
+data = (
+    b"\0" + _cached_varuint_to_bytes(len(data)) + _cached_varuint_to_bytes(type_) + data
+)
+
+
+def _packet(type_: int, data: bytes):
+    pass
+
+
+def _on_error(exc: Exception):
+    raise exc
+
+
+helper = APIPlaintextFrameHelper(
+    on_pkt=_packet, on_error=_on_error, client_info="my client", log_name="test"
+)
+
+
+def process_incoming_msg():
+    helper.data_received(data)
+
+
+count = 3000000
+time = timeit.Timer(process_incoming_msg).timeit(count)
+print(f"Processed {count} bluetooth messages took {time} seconds")