New watch face: Tally counter (tally_face) (#160)

* Add tally face

* Fix copyright block to reflect real author

* Fix indentation

* More style editing, edited comments

* silence warning in tally_face

Co-authored-by: Andrew Mike <andrew@7thmagic.net>
Co-authored-by: joeycastillo <joeycastillo@utexas.edu>

movement/movement_faces.h

@@ -68,6 +68,7 @@
 #include "finetune_face.h"
 #include "databank_face.h"
 #include "tempchart_face.h"
+#include "tally_face.h"
 // New includes go above this line.
 
 #endif // MOVEMENT_FACES_H_