Added rough draft of watch_face script to generate custom watch faces from template. Corrected template file's missing includes and incorrect memset placeholder.

movement/template/template.c

@@ -22,13 +22,15 @@
  * SOFTWARE.
  */
 
+#include <stdlib.h>
+#include <string.h>
 #include "<#watch_face_name#>_face.h"
 
 void <#watch_face_name#>_face_setup(movement_settings_t *settings, uint8_t watch_face_index, void ** context_ptr) {
     (void) settings;
     if (*context_ptr == NULL) {
         *context_ptr = malloc(sizeof(<#watch_face_name#>_state_t));
-        memset(*context_ptr, 0, sizeof(<#watch_face_name#>));
+        memset(*context_ptr, 0, sizeof(<#watch_face_name#>_state_t));
         // Do any one-time tasks in here; the inside of this conditional happens only at boot.
     }
     // Do any pin or peripheral setup here; this will be called whenever the watch wakes from deep sleep.