Add color_mode support to MQTT light with basic schema (#50464)

* Add color_mode support to MQTT light with basic schema

* Update abbreviations

* Silence pylint

* Improve test coverage

* Apply suggestions from code review

homeassistant/components/mqtt/abbreviations.py

@@ -25,6 +25,8 @@
     "chrg_t": "charging_topic",
     "chrg_tpl": "charging_template",
     "clrm": "color_mode",
+    "clrm_stat_t": "color_mode_state_topic",
+    "clrm_val_tpl": "color_mode_value_template",
     "clr_temp_cmd_t": "color_temp_command_topic",
     "clr_temp_stat_t": "color_temp_state_topic",
     "clr_temp_tpl": "color_temp_template",
@@ -146,6 +148,14 @@
     "rgb_cmd_t": "rgb_command_topic",
     "rgb_stat_t": "rgb_state_topic",
     "rgb_val_tpl": "rgb_value_template",
+    "rgbw_cmd_tpl": "rgbw_command_template",
+    "rgbw_cmd_t": "rgbw_command_topic",
+    "rgbw_stat_t": "rgbw_state_topic",
+    "rgbw_val_tpl": "rgbw_value_template",
+    "rgbww_cmd_tpl": "rgbww_command_template",
+    "rgbww_cmd_t": "rgbww_command_topic",
+    "rgbww_stat_t": "rgbww_state_topic",
+    "rgbww_val_tpl": "rgbww_value_template",
     "send_cmd_t": "send_command_topic",
     "send_if_off": "send_if_off",
     "set_fan_spd_t": "set_fan_speed_topic",