movement: add world clock face

movement/watch_faces/clock/world_clock_face.h

@@ -0,0 +1,33 @@
+#ifndef WORLD_CLOCK_FACE_H_
+#define WORLD_CLOCK_FACE_H_
+
+#include "movement.h"
+
+typedef struct {
+    uint8_t char_0;
+    uint8_t char_1;
+    uint8_t timezone_index;
+} world_clock_settings_t;
+
+typedef struct {
+    world_clock_settings_t settings;
+    uint8_t current_screen;
+    uint32_t previous_date_time;
+} world_clock_state_t;
+
+void world_clock_face_setup(movement_settings_t *settings, void ** context_ptr);
+void world_clock_face_activate(movement_settings_t *settings, void *context);
+bool world_clock_face_loop(movement_event_t event, movement_settings_t *settings, void *context);
+void world_clock_face_resign(movement_settings_t *settings, void *context);
+
+uint8_t world_clock_face_get_weekday(uint16_t day, uint16_t month, uint16_t year);
+
+static const watch_face_t world_clock_face = {
+    world_clock_face_setup,
+    world_clock_face_activate,
+    world_clock_face_loop,
+    world_clock_face_resign,
+    NULL
+};
+
+#endif // WORLD_CLOCK_FACE_H_