Remove old HAL components and refactored GPS-related code (#583)

- Added generic GPS/GNSS support with device detection, configuration, and persistent settings.
- Improved device and module lifecycle management.
- Added flexible filesystem locking support for displays and storage.
- Improved display-idle and keyboard backlight handling.
- Updated architecture, driver, module, testing, and licensing documentation.
- Removed old HAL device and related code.

Devices/simulator/Source/drivers/sdl_input.h

@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: Apache-2.0
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdbool.h>
+#include <stdint.h>
+
+/**
+ * @brief Latest pointer (mouse) state as tracked by sdl_input_pump().
+ */
+struct SdlPointerState {
+    int32_t x;
+    int32_t y;
+    bool pressed;
+};
+
+/**
+ * @brief Drains all pending SDL events exactly once, updating the pointer state and key queue
+ * below. Safe to call from both the sdl-pointer and sdl-keyboard drivers' polling functions:
+ * SDL_PollEvent() drains a single global queue, so whichever driver is polled first on a given
+ * LVGL indev tick pumps events for both.
+ */
+void sdl_input_pump(void);
+
+/**
+ * @brief Gets the pointer state as of the most recent sdl_input_pump() call.
+ */
+void sdl_input_get_pointer_state(struct SdlPointerState* out_state);
+
+/**
+ * @brief Pops the next queued key event (produced by SDL_KEYDOWN/SDL_TEXTINPUT during
+ * sdl_input_pump()).
+ * @retval false when no key event is pending
+ */
+bool sdl_input_pop_key(uint32_t* out_key);
+
+/**
+ * @brief Returns true if another key event is queued after the one just popped.
+ */
+bool sdl_input_has_queued_key(void);
+
+#ifdef __cplusplus
+}
+#endif