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/include/tactility/bindings/esp32_sdmmc.h

@@ -0,0 +1,15 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#include <tactility/bindings/bindings.h>
+#include <tactility/drivers/esp32_sdmmc.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+DEFINE_DEVICETREE(esp32_sdmmc, struct Esp32SdmmcConfig)
+
+#ifdef __cplusplus
+}
+#endif

Platforms/platform-esp32/include/tactility/drivers/esp32_sdmmc.h

@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+#include <soc/soc_caps.h>
+#if SOC_SDMMC_HOST_SUPPORTED
+
+#include <sd_protocol_types.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <tactility/drivers/gpio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct Esp32SdmmcConfig {
+    struct GpioPinSpec pin_clk;
+    struct GpioPinSpec pin_cmd;
+    struct GpioPinSpec pin_d0;
+    struct GpioPinSpec pin_d1;
+    struct GpioPinSpec pin_d2;
+    struct GpioPinSpec pin_d3;
+    struct GpioPinSpec pin_d4;
+    struct GpioPinSpec pin_d5;
+    struct GpioPinSpec pin_d6;
+    struct GpioPinSpec pin_d7;
+    struct GpioPinSpec pin_cd;
+    struct GpioPinSpec pin_wp;
+    uint8_t bus_width;
+    bool wp_active_high;
+    bool enable_uhs;
+};
+
+/**
+ * @brief Get the SD card handle for the given device.
+ * @param[in] device the device to get the card handle for
+ * @return the SD card handle, or NULL if the device is not mounted
+ */
+sdmmc_card_t* esp32_sdmmc_get_card(struct Device* device);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif