implemented service registry (#8)

+ implemented app and service context for data sharing

components/furi/src/app_i.h

@@ -9,11 +9,9 @@ extern "C" {
 
 typedef struct {
     const AppManifest* manifest;
-    void* ep_thread_args;
+    Context context;
 } App;
 
-const char* furi_app_type_to_string(AppType type);
-FuriThread* furi_app_alloc_thread(App* _Nonnull app, const char* args);
 App* furi_app_alloc(const AppManifest* _Nonnull manifest);
 void furi_app_free(App* _Nonnull app);