refactor(display): migrate from ST7735S to ST7789 driver

- Rename component directory from lvgl_st7735s_use to lvgl_st7789_use
- Update CMakeLists.txt to register new source files
- Add comprehensive README documentation for ST7789 configuration
- Add time_alarm module with SNTP synchronization and alarm management
- Add sensors header for sensor abstraction layer

components/ui/fonts.h

@@ -0,0 +1,27 @@
+#ifndef EEZ_LVGL_UI_FONTS_H
+#define EEZ_LVGL_UI_FONTS_H
+
+#include <lvgl.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern const lv_font_t ui_font_source_han_sans_sc_medium_22;
+extern const lv_font_t ui_font_source_han_sans_sc_medium_36;
+
+#ifndef EXT_FONT_DESC_T
+#define EXT_FONT_DESC_T
+typedef struct _ext_font_desc_t {
+    const char *name;
+    const void *font_ptr;
+} ext_font_desc_t;
+#endif
+
+extern ext_font_desc_t fonts[];
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*EEZ_LVGL_UI_FONTS_H*/