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

mcu-kitchen.yaml

@@ -1,7 +1,7 @@
 substitutions:
   device: kitchen
   name: Kitchen
-  area: Living Room / Kitchen
+  area: Living Room & Kitchen
   comment: "${area} | Kitchen Worktop and Stove Lights"
 
 esphome:
@@ -29,11 +29,9 @@ esphome:
 
 
 esp32:
-  board: m5stack-atom
+  variant: esp32
   framework:
     type: esp-idf
-    version: 5.3.2
-    platform_version: 53.03.11
 
 packages:
   common: !include common/common.yaml
@@ -124,8 +122,8 @@ light:
     id: light_3
     default_transition_length: 200ms
     restore_mode: ALWAYS_ON
-    cold_white: pwm_ww_3
-    warm_white: pwm_cw_3
+    cold_white: pwm_cw_3
+    warm_white: pwm_ww_3
     cold_white_color_temperature: 6536 K
     warm_white_color_temperature: 2000 K
   # - platform: cwww
@@ -205,3 +203,6 @@ power_supply:
 #     name: "${name} Relay Spare"
 #     id: relay_2
 #     pin: 19
+
+bluetooth_proxy:
+  active: true