GameSwitcher: Faster pause/resume + save menu (press START) (#1747)

## Changes

- Improved startup time for GameSwitcher (<1 second)
- Improved "time to resume" for GameSwitcher (instant, when going back
to RetroArch)
- Added save menu (press <kbd>START</kbd> to activate)
- Resume: Resumes the game (same as pressing <kbd>A</kbd> in normal
view)
  - Save: Creates a save state for the next save slot
- Load: Select a state by pressing <kbd>LEFT</kbd>/<kbd>RIGHT</kbd>,
press <kbd>A</kbd> to load, or <kbd>X</kbd> to delete
- Exit to menu: quits the game and returns you to MainUI (same as
pressing <kbd>B</kbd> in normal view)

## Preview


![GameSwitcher_003](https://github.com/user-attachments/assets/5ab495d0-aa6f-4a79-a238-c8fc11377214)

See the performance improvement in the below video (left is before,
right is after).


https://github.com/user-attachments/assets/65c87841-b502-4797-a806-a38f6b9adaba

Makefile

@@ -2,7 +2,7 @@
 
 TARGET=Onion
 VERSION=4.4.0
-RA_SUBVERSION=1.19.1-2
+RA_SUBVERSION=1.19.1-3
 
 ###########################################################
 

src/batmon/batmon.c

@@ -25,7 +25,7 @@ int main(int argc, char *argv[])
     signal(SIGCONT, sigHandler);
     signal(SIGUSR1, sigHandler);
 
-    display_init();
+    display_init(true);
     int ticks = CHECK_BATTERY_TIMEOUT_S;
 
     bool is_charging = false;
@@ -483,7 +483,7 @@ static void *batteryWarning_thread(void *param)
         if (temp_flag_get("hasBatteryDisplay"))
             break;
         if (display_getBrightnessRaw() != 0) {
-            display_drawBatteryIcon(0x00FF0000, 15, RENDER_HEIGHT - 30, 10,
+            display_drawBatteryIcon(0x00FF0000, 15, g_display.height - 30, 10,
                                     0x00FF0000); // draw red battery icon
         }
         usleep(0x4000);

src/bootScreen/Makefile

@@ -3,7 +3,7 @@ INCLUDE_SHMVAR=1
 include ../common/config.mk
 
 TARGET = bootScreen
-LDFLAGS := $(LDFLAGS) -lSDL -lSDL_image -lSDL_ttf -lSDL_mixer 
+LDFLAGS := $(LDFLAGS) -lSDL -lSDL_image -lSDL_ttf -lSDL_rotozoom
 
 include ../common/commands.mk
 include ../common/recipes.mk

src/bootScreen/bootScreen.c

@@ -13,21 +13,25 @@
 #include "utils/file.h"
 #include "utils/flags.h"
 #include "utils/log.h"
+#include "utils/sdl_direct_fb.h"
 
 int main(int argc, char *argv[])
 {
     // Boot : Loading screen
     // End_Save : Ending screen with save
     // End : Ending screen without save
 
-    SDL_Init(SDL_INIT_VIDEO);
+    init(INIT_PNG);
+
+    if (argc > 1 && strcmp(argv[1], "clear") == 0) {
+        SDL_FillRect(screen, NULL, 0);
+        render();
+        return EXIT_SUCCESS;
+    }
 
     char theme_path[STR_MAX];
     theme_getPath(theme_path);
 
-    SDL_Surface *video = SDL_SetVideoMode(640, 480, 32, SDL_HWSURFACE);
-    SDL_Surface *screen = SDL_CreateRGBSurface(SDL_HWSURFACE, 640, 480, 32, 0, 0, 0, 0);
-
     SDL_Surface *background;
     bool show_battery = false;
     bool show_version = true;
@@ -95,10 +99,8 @@ int main(int argc, char *argv[])
     }
 
     // Blit twice, to clear the video buffer
-    SDL_BlitSurface(screen, NULL, video, NULL);
-    SDL_Flip(video);
-    SDL_BlitSurface(screen, NULL, video, NULL);
-    SDL_Flip(video);
+    render();
+    render();
 
     if (argc > 1 && strcmp(argv[1], "Boot") != 0)
         temp_flag_set(".offOrder", false);
@@ -108,9 +110,9 @@ int main(int argc, char *argv[])
 #endif
 
     TTF_CloseFont(font);
-    SDL_FreeSurface(screen);
-    SDL_FreeSurface(video);
-    SDL_Quit();
+    TTF_Quit();
+
+    deinit();
 
     return EXIT_SUCCESS;
 }

src/common/components/list.h

@@ -7,6 +7,7 @@
 #include <string.h>
 #include <strings.h>
 
+#include "system/lang.h"
 #include "utils/str.h"
 
 #define MAX_NUM_VALUES 100
@@ -40,7 +41,7 @@ typedef struct ListItem {
     int _reset_value;
     void *icon_ptr;
     void *preview_ptr;
-    char preview_path[STR_MAX];
+    char preview_path[4096];
     char sticky_note[STR_MAX];
     char info_note[STR_MAX];
 } ListItem;
@@ -155,6 +156,14 @@ ListItem *list_addItemWithInfoNote(List *list, ListItem item, const char *info_n
     return _item;
 }
 
+ListItem *list_addItemWithLang(List *list, ListItem item, const lang_hash key)
+{
+    ListItem *_item = list_addItem(list, item);
+    if (lang_list && lang_list[key])
+        strcpy(_item->label, lang_list[key]);
+    return _item;
+}
+
 ListItem *list_currentItem(List *list)
 {
     if (list->active_pos >= list->item_count)