Device migrations, new drivers, cleanup (#567)

* **New Features**
  * Added native display support for ST7796, ILI9341, and ST7789 panels across supported boards.
  * Added FT5x06 and FT6x36 touchscreen support.
  * Generic PWM driver
  * ESP32 PWM driver
  * Generic RGB LED driver
  * RGB PWM LED driver
  * RGB GPIO LED driver
  * Implementation of RGB LED for various boards

* **Improvements**
  * Updated board hardware descriptions to use explicit display/touch/backlight device-tree bindings and disabled deprecated HAL usage.
  * Improved display and touch-driver cleanup to prevent stale resources and improve shutdown reliability.
  * Pinned esp-hosted library to a fixed version
 
* **Deletions**
  * Obsolete placeholder display
  * Legacy ILI9488 support.
  * ESP32-specific LEDC PWM implementation

Drivers/ft5x06-module/include/bindings/ft5x06.h

@@ -0,0 +1,7 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#include <tactility/bindings/bindings.h>
+#include <drivers/ft5x06.h>
+
+DEFINE_DEVICETREE(ft5x06, struct Ft5x06Config)

Drivers/ft5x06-module/include/drivers/ft5x06.h

@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#include <tactility/drivers/gpio.h>
+
+struct Ft5x06Config {
+    // Devicetree address hint. Unused by the driver: the FT5x06 always sits at a fixed
+    // I2C address (0x38, see ESP_LCD_TOUCH_IO_I2C_FT5x06_ADDRESS).
+    uint8_t address;
+    uint16_t x_max;
+    uint16_t y_max;
+    bool swap_xy;
+    bool mirror_x;
+    bool mirror_y;
+    struct GpioPinSpec pin_reset;
+    struct GpioPinSpec pin_interrupt;
+    bool reset_active_high;
+    bool interrupt_active_high;
+};
+
+#ifdef __cplusplus
+}
+#endif

Drivers/ft5x06-module/include/ft5x06_module.h

@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#include <tactility/module.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern struct Module ft5x06_module;
+
+#ifdef __cplusplus
+}
+#endif