Fix missing documentation for many clock faces:

* Move from .c to .h as needed for consistency.
* When missing from both, copy from pull request or wiki.
* When missing entirely, infer functionality from source code.

movement/watch_faces/complication/timer_face.c

@@ -22,8 +22,6 @@
  * SOFTWARE.
  */
 
-//-----------------------------------------------------------------------------
-
 #include <stdlib.h>
 #include <string.h>
 #include "timer_face.h"