FL-528 GUI: View, ViewDispather. Dolphin: first start. (#276)

* GUI: view. Flooper-blooper fix compilation error.
* GUI: view and viewdispatcher bones
* GUI: view implementation, view models, view dispatcher
* GUI: view navigation, model refinement. Power: use view, view dispatcher.
* HAL Flash: proper page write. Dolphin: views. Power: views
* Dolphin: transition idle scree to Views
* Dolphin: input events on stats view. Format sources.
* HAL: flash erase. Dolphin: permanent state storage.
* Dolphin: first start welcome. HAL: flash operation status, errata 2.2.9 crutch.

applications/dolphin/dolphin_views.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <gui/canvas.h>
+#include <flipper_v2.h>
+
+// Idle scree
+typedef enum {
+    DolphinViewFirstStart,
+    DolphinViewIdleMain,
+    DolphinViewIdleStats,
+    DolphinViewIdleDebug,
+} DolphinViewIdle;
+
+typedef struct {
+    uint32_t page;
+} DolphinViewFirstStartModel;
+
+void dolphin_view_first_start_draw(Canvas* canvas, void* model);
+bool dolphin_view_first_start_input(InputEvent* event, void* context);
+
+typedef struct {
+    uint32_t icounter;
+    uint32_t butthurt;
+} DolphinViewIdleStatsModel;
+
+void dolphin_view_idle_main_draw(Canvas* canvas, void* model);
+bool dolphin_view_idle_main_input(InputEvent* event, void* context);
+void dolphin_view_idle_stats_draw(Canvas* canvas, void* model);
+bool dolphin_view_idle_stats_input(InputEvent* event, void* context);
+void dolphin_view_idle_debug_draw(Canvas* canvas, void* model);
+uint32_t dolphin_view_idle_back(void* context);