refactor(lcd): use LZ4-compressed binary images in i80_controller example

- Remove the EXAMPLE_LCD_IMAGE_SOURCE Kconfig option (embedded binary vs
  file system) and always load images from LittleFS.
- Convert the PNG images into LZ4-compressed LVGL binary images (.bin)
at
  build time using LVGLImage.py, and flash them to a LittleFS partition.
- Upgrade lvgl to 9.6.0 and add the espressif/lz4 component; link the
external LZ4 library into lvgl.
- Split the example: main.c focuses on the esp_lcd i80 API, while the
LVGL
  porting (lvgl_port.c) and the UI (lvgl_demo_ui.c) live in separate
files.
- Rework the demo animation to use the LVGL animation engine (lv_anim)
with
  easing paths instead of a manual software timer for smoother
rendering.
- Remove the embedded C image arrays (esp_logo.c, esp_text.c) and the
  obsolete sdkconfig.ci.image_in_{bin,fs} variants.

examples/peripherals/lcd/spi_lcd_touch/main/idf_component.yml

@@ -1,4 +1,4 @@
 dependencies:
-  lvgl/lvgl: 9.3.0
+  lvgl/lvgl: "9.6.0"
   esp_lcd_touch_stmpe610: ^1.0.0
   atanisoft/esp_lcd_touch_xpt2046: 1.0.6

examples/peripherals/lcd/spi_lcd_touch/main/lvgl_demo_ui.c

@@ -9,16 +9,16 @@
 #include "lvgl.h"
 
 static lv_obj_t * btn;
-static lv_display_rotation_t rotation = LV_DISP_ROTATION_0;
+static lv_display_rotation_t rotation = LV_DISPLAY_ROTATION_0;
 
 static void btn_cb(lv_event_t * e)
 {
     lv_display_t *disp = lv_event_get_user_data(e);
     rotation++;
-    if (rotation > LV_DISP_ROTATION_270) {
-        rotation = LV_DISP_ROTATION_0;
+    if (rotation > LV_DISPLAY_ROTATION_270) {
+        rotation = LV_DISPLAY_ROTATION_0;
     }
-    lv_disp_set_rotation(disp, rotation);
+    lv_display_set_rotation(disp, rotation);
 }
 static void set_angle(void * obj, int32_t v)
 {
@@ -41,7 +41,7 @@ void example_lvgl_demo_ui(lv_display_t *disp)
     lv_arc_set_rotation(arc, 270);
     lv_arc_set_bg_angles(arc, 0, 360);
     lv_obj_remove_style(arc, NULL, LV_PART_KNOB);   /*Be sure the knob is not displayed*/
-    lv_obj_remove_flag(arc, LV_OBJ_FLAG_CLICKABLE);  /*To not allow adjusting by click*/
+    lv_obj_set_clickable(arc, false);  /*To not allow adjusting by click*/
     lv_obj_center(arc);
 
     lv_anim_t a;