docs: add note about meal-plan card

Since this card is built on top of tuya-local, other users may be interested.

README.md

@@ -280,7 +280,6 @@ persistently and survives restarts.
 
 ### Sending commands
 
-
 Using the `infrared` platform, you can send known IR commands using
 other HA integrations, including
 [HAIR](https://github.com/DAB-LABS/HAIR), a custom integration for
@@ -304,6 +303,10 @@ If you would like to expose the learnt commands as buttons in the user interface
 you might want to take a look at the [Remote buttons](https://github.com/kongo09/remote_buttons)
 integration, which is compatible with Tuya Local.
 
+## Pet feeders
+
+Many pet feeders expose an encoded **Meal plan** setting via a text entity. By default this is disabled, but you can enable it under the Device settings in HA. When enabled many pet feeders share the same underlying format, which is supported by the [FrederikM97/mealplan-card](https://github.com/FredrikM97/mealplan-card) custom card.
+
 ## Contributing
 
 Beyond contributing device configs, here are some areas that could benefit from more hands: