Update to LVGL 9.0.0 (#47)

- Updated LVGL from 8.3 to 9.0 (removed example/docs/demo folders)
- Updated esp_lvgl_port  to current status of the `lvgl9` branch on `esp-bsp`: https://github.com/espressif/esp-bsp/tree/lvgl9
- Updated all boards and drivers
- Removed `libs/lv_drivers` subproject as SDL is now supported by LVGL directly (although keyboard input seems broken)
- Updated `libs/lv_screenshot`
- Fixed the way `tt_statusbar` widget works due to behaviour change in LVGL
- Updated other lvgl code

boards/yellow_board/display.c

@@ -8,7 +8,6 @@
 #include "esp_lcd_panel_io.h"
 #include "esp_lcd_panel_ops.h"
 #include "esp_lvgl_port.h"
-#include "hal/lv_hal_disp.h"
 
 #define TAG "twodotfour_ili9341"
 
@@ -117,10 +116,13 @@ lv_disp_t* twodotfour_display_init() {
         },
         .flags = {
             .buff_dma = true,
+            .buff_spiram = false,
+            .sw_rotate = false,
+            .swap_bytes = true
         }
     };
 
-    lv_disp_t* display = lvgl_port_add_disp(&disp_cfg);
+    lv_display_t* display = lvgl_port_add_disp(&disp_cfg);
 
     return display;
 }