App Loading via Loader (#1)

* app loading wip

* various improvements

irq/isr stuff is now working
lvgl locking where needed
hello world now uses proper mutex for app unlocking
etc?

* various improvements

* cmsis_esp improvements

* implement interrupts

components/nanobake/src/apps/services/gui/gui.h

@@ -0,0 +1,86 @@
+#pragma once
+
+#include "app_manifest.h"
+#include "view_port.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern const AppManifest gui_app;
+
+/** Gui layers */
+typedef enum {
+    GuiLayerDesktop, /**< Desktop layer for internal use. Like fullscreen but with status bar */
+
+    GuiLayerWindow, /**< Window layer, status bar is shown */
+
+    GuiLayerStatusBarLeft,  /**< Status bar left-side layer, auto-layout */
+    GuiLayerStatusBarRight, /**< Status bar right-side layer, auto-layout */
+
+    GuiLayerFullscreen, /**< Fullscreen layer, no status bar */
+
+    GuiLayerMAX /**< Don't use or move, special value */
+} GuiLayer;
+
+/** Gui Canvas Commit Callback */
+typedef void (*GuiCanvasCommitCallback)(
+    uint8_t* data,
+    size_t size,
+    void* context
+);
+
+#define RECORD_GUI "gui"
+
+typedef struct Gui Gui;
+
+/** Add view_port to view_port tree
+ *
+ * @remark     thread safe
+ *
+ * @param      gui        Gui instance
+ * @param      view_port  ViewPort instance
+ * @param[in]  layer      GuiLayer where to place view_port
+ */
+void gui_add_view_port(Gui* gui, ViewPort* view_port, GuiLayer layer);
+
+/** Remove view_port from rendering tree
+ *
+ * @remark     thread safe
+ *
+ * @param      gui        Gui instance
+ * @param      view_port  ViewPort instance
+ */
+void gui_remove_view_port(Gui* gui, ViewPort* view_port);
+
+/** Send ViewPort to the front
+ *
+ * Places selected ViewPort to the top of the drawing stack
+ *
+ * @param      gui        Gui instance
+ * @param      view_port  ViewPort instance
+ */
+void gui_view_port_send_to_front(Gui* gui, ViewPort* view_port);
+
+/** Send ViewPort to the back
+ *
+ * Places selected ViewPort to the bottom of the drawing stack
+ *
+ * @param      gui        Gui instance
+ * @param      view_port  ViewPort instance
+ */
+void gui_view_port_send_to_back(Gui* gui, ViewPort* view_port);
+
+/** Set lockdown mode
+ *
+ * When lockdown mode is enabled, only GuiLayerDesktop is shown.
+ * This feature prevents services from showing sensitive information when flipper is locked.
+ *
+ * @param      gui       Gui instance
+ * @param      lockdown  bool, true if enabled
+ */
+void gui_set_lockdown(Gui* gui, bool lockdown);
+
+#ifdef __cplusplus
+}
+#endif