add beo4_protocol to remote_base component (#8307)

tests/components/remote_receiver/common-actions.yaml

@@ -3,6 +3,11 @@ on_abbwelcome:
     - logger.log:
         format: "on_abbwelcome: %u"
         args: ["x.data()[0]"]
+on_beo4:
+  then:
+    - logger.log:
+        format: "on_beo4: %u %u"
+        args: ["x.source", "x.command"]
 on_aeha:
   then:
     - logger.log:

tests/components/remote_transmitter/common-buttons.yaml

@@ -1,4 +1,11 @@
 button:
+  - platform: template
+    name: Beo4 audio mute
+    id: beo4_audio_mute
+    on_press:
+      remote_transmitter.transmit_beo4:
+        source: 0x01
+        command: 0x0C
   - platform: template
     name: JVC Off
     id: living_room_lights_on