Trackball rewrite (#600)

- Implement generic trackball settings
- Refactor T-Deck trackball driver into generic driver at `Drivers/gpio-trackball-module`
- Automatically bind/unbind trackball devices with LVGL
- Automatically load settings for trackball devices on boot

Drivers/lilygo-module/bindings/lilygo,tdeck-trackball.yaml

@@ -1,25 +0,0 @@
-description: LilyGO T-Deck 5-way GPIO trackball (4 directions + click button)
-
-compatible: "lilygo,tdeck-trackball"
-
-properties:
-  pin-right:
-    type: phandles
-    required: true
-    description: Right-direction GPIO pin
-  pin-up:
-    type: phandles
-    required: true
-    description: Up-direction GPIO pin
-  pin-left:
-    type: phandles
-    required: true
-    description: Left-direction GPIO pin
-  pin-down:
-    type: phandles
-    required: true
-    description: Down-direction GPIO pin
-  pin-click:
-    type: phandles
-    required: true
-    description: Click button GPIO pin