Migrate from Boards to Variant, remove hardcoded versions, remove customn directories and some cleanup

mcu-cec-bedroom.yaml

@@ -11,19 +11,19 @@ esphome:
   comment: ${comment}
 
 esp32:
-  board: m5stack-atom
+  variant: esp32
   framework:
-    # type: arduino
     type: esp-idf
-    version: 5.3.2
-    platform_version: 53.03.11
 
 external_components:
   # - source: github://pr#3017
   #   components: [hdmi_cec]
   #   refresh: 1h
-  - source: github://Palakis/esphome-hdmi-cec
-    refresh: 1h
+  # - source: github://Palakis/esphome-hdmi-cec
+  #   refresh: 1h
+  - source: github://pr#9189
+    components: [hdmi_cec]
+    refresh: 0min
 packages:
   common: !include common/common.yaml
 
@@ -131,6 +131,9 @@ hdmi_cec:
   physical_address: 0x4000
   pin: 26
   on_message:
+    - opcode: 0x36 # opcode for "Standby"
+      then:
+        logger.log: "Got Standby command"
     - opcode: 0xC3 # Request ARC start
       then:
         - hdmi_cec.send: # Report ARC started