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.

Platforms/platform-esp32/private/tactility/drivers/esp32_sdmmc_fs.h

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+#include <soc/soc_caps.h>
+#if SOC_SDMMC_HOST_SUPPORTED
+#include <tactility/filesystem/file_system.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct Esp32SdmmcConfig;
+typedef void* Esp32SdmmcHandle;
+
+extern Esp32SdmmcHandle esp32_sdmmc_fs_alloc(const struct Esp32SdmmcConfig* config, const char* mount_path);
+
+extern void esp32_sdmmc_fs_free(Esp32SdmmcHandle handle);
+
+extern sdmmc_card_t* esp32_sdmmc_fs_get_card(Esp32SdmmcHandle handle);
+
+extern const FileSystemApi esp32_sdmmc_fs_api;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif