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.

Tactility/Source/file/FileMutexLvgl.cpp

@@ -0,0 +1,80 @@
+#include <tactility/device.h>
+#include <tactility/drivers/display.h>
+#include <tactility/drivers/spi_controller.h>
+#include <tactility/filesystem/file_mutex.h>
+#include <tactility/filesystem/file_system.h>
+#include <tactility/lvgl_module.h>
+
+constexpr auto* TAG = "file_mutex_lvgl";
+
+struct Device;
+namespace tt {
+
+static const FileMutex lvgl_mutex = {
+    .lock = lvgl_lock,
+    .try_lock = lvgl_try_lock,
+    .unlock = lvgl_unlock,
+};
+
+/**
+ * Finds file systems with a device (e.g. sd card) that is owned by a SPI controller.
+ * If the SPI controller has a display on the bus, we create an LVGL lock for the file system path.
+ */
+void initFileMutexForLvgl() {
+    file_system_for_each(nullptr, [](FileSystem* fs, void* context) {
+        char mount_path[64];
+        if (file_system_get_path(fs, mount_path, sizeof(mount_path)) != ERROR_NONE) {
+            return true;
+        }
+        LOG_D(TAG, "Mount path %s", mount_path);
+
+        // We only care about file system with a Device (owner)
+        auto* owner = file_system_get_owner(fs);
+        if (owner == nullptr) {
+            LOG_D(TAG, "Owner: none");
+            return true;
+        }
+
+        LOG_D(TAG, "Owner: %s", owner->name);
+
+        // Ignore devices without a parent (root)
+        auto* parent = device_get_parent(owner);
+        if (parent == nullptr) {
+            LOG_D(TAG, "Owner: no parent");
+            return true;
+        }
+
+        LOG_D(TAG, "Owner: parent %s", parent->name);
+
+        // If the FileSystem is on a SPI bus and there's more than 1 device, we assume the other one is the display.
+        auto* type = device_get_type(parent);
+        if (type != &SPI_CONTROLLER_TYPE || device_get_child_count(parent) <= 1) {
+            LOG_D(TAG, "Owner parent not SPI controller or not enough children");
+            return true;
+        }
+
+        struct Context {
+            const char* mountPath;
+        };
+        Context ctx = { .mountPath = mount_path };
+
+        device_for_each_child(parent, &ctx, [](Device* child, void* context) -> bool {
+            Context* ctx = static_cast<Context*>(context);
+            if (device_get_type(child) == &DISPLAY_TYPE) {
+                LOG_I(TAG, "Adding file mutex for %s as it shares a bus with a display", ctx->mountPath);
+                file_mutex_register(
+                    &lvgl_mutex,
+                    ctx->mountPath
+                );
+                return false;
+            } else {
+                LOG_D(TAG, "child of parent, %s: not DISPLAY_TYPE", child->name);
+            }
+            return true;
+        });
+
+        return true;
+    });
+}
+
+}