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.

Tactility/Source/PartitionsEsp.cpp

@@ -5,11 +5,47 @@
 
 #include <esp_vfs_fat.h>
 #include <nvs_flash.h>
+#include <tactility/error.h>
+#include <tactility/filesystem/file_system.h>
 
 namespace tt {
 
 static const auto LOGGER = Logger("Partitions");
 
+// region file_system stub
+
+struct PartitionFsData {
+    const char* path;
+};
+
+static error_t mount(void* data) {
+    return ERROR_NOT_SUPPORTED;
+}
+
+static error_t unmount(void* data) {
+    return ERROR_NOT_SUPPORTED;
+}
+
+static bool is_mounted(void* data) {
+    return true;
+}
+
+static error_t get_path(void* data, char* out_path, size_t out_path_size) {
+    auto* fs_data = static_cast<PartitionFsData*>(data);
+    if (strlen(fs_data->path) >= out_path_size) return ERROR_BUFFER_OVERFLOW;
+    strncpy(out_path, fs_data->path, out_path_size);
+    return ERROR_NONE;
+}
+
+FileSystemApi partition_fs_api = {
+    .mount = mount,
+    .unmount = unmount,
+    .is_mounted = is_mounted,
+    .get_path = get_path
+};
+
+// endregion file_system stub
+
 static esp_err_t initNvsFlashSafely() {
     esp_err_t result = nvs_flash_init();
     if (result == ESP_ERR_NVS_NO_FREE_PAGES || result == ESP_ERR_NVS_NEW_VERSION_FOUND) {
@@ -56,6 +92,8 @@ esp_err_t initPartitionsEsp() {
         LOGGER.error("Failed to mount /system ({})", esp_err_to_name(system_result));
     } else {
         LOGGER.info("Mounted /system");
+        static auto system_fs_data = PartitionFsData("/system");
+        file_system_add(&partition_fs_api, &system_fs_data);
     }
 
     auto data_result = esp_vfs_fat_spiflash_mount_rw_wl("/data", "data", &mount_config, &data_wl_handle);
@@ -63,6 +101,8 @@ esp_err_t initPartitionsEsp() {
         LOGGER.error("Failed to mount /data ({})", esp_err_to_name(data_result));
     } else {
         LOGGER.info("Mounted /data");
+        static auto data_fs_data = PartitionFsData("/data");
+        file_system_add(&partition_fs_api, &data_fs_data);
     }
 
     return system_result == ESP_OK && data_result == ESP_OK;