New kernel drivers, filesystem API, and more (#513)

* **New Features**
  * BMI270 6-axis IMU driver added; new unified filesystem abstraction for mounted filesystems.
  * Public Wi‑Fi API surface (no implementation yet)
  * SDMMC driver added (kernel drive$)
  * expanded GPIO interrupt/callback support
* **Improvements**
  * M5Stack Tab5: revamped GPIO/power initialization and IMU integration.
  * LVGL updates including device fontSize configuration.
  * Updated all code related to SD card device/fs handling
  * Rename LilyGO T-HMI S3 to LilyGO T-HMI
* **Bug Fixes**
  * Simplified and consolidated SD card handling and mount discovery.

Devices/lilygo-thmi/Source/Init.cpp

@@ -0,0 +1,47 @@
+#include "devices/Power.h"
+#include "devices/Display.h"
+
+#include "PwmBacklight.h"
+#include "Tactility/kernel/SystemEvents.h"
+#include <Tactility/TactilityCore.h>
+
+#define TAG "thmi"
+
+static bool powerOn() {
+    gpio_config_t power_signal_config = {
+        .pin_bit_mask =  (1ULL << THMI_POWERON_GPIO) | (1ULL << THMI_POWEREN_GPIO),
+        .mode = GPIO_MODE_OUTPUT,
+        .pull_up_en = GPIO_PULLUP_DISABLE,
+        .pull_down_en = GPIO_PULLDOWN_DISABLE,
+        .intr_type = GPIO_INTR_DISABLE,
+    };
+
+    if (gpio_config(&power_signal_config) != ESP_OK) {
+        return false;
+    }
+
+    if (gpio_set_level(THMI_POWERON_GPIO, 1) != ESP_OK) {
+        return false;
+    }
+    
+    if (gpio_set_level(THMI_POWEREN_GPIO, 1) != ESP_OK) {
+        return false;
+    }
+
+    return true;
+}
+
+bool initBoot() {
+    ESP_LOGI(TAG, "Powering on the board...");
+    if (!powerOn()) {
+        ESP_LOGE(TAG, "Failed to power on the board.");
+        return false;
+    }
+
+    if (!driver::pwmbacklight::init(DISPLAY_BL, 30000)) {
+        ESP_LOGE(TAG, "Failed to initialize backlight.");
+        return false;
+    }
+
+    return true;
+}