Clock marks

The Clock and the Clockwork Head do not slow time any more: they put a MARK on moles (TEAL or GOLD) that lasts 8 rows.

A TEAL mark pays x1.6 score and x1.5 XP. A GOLD mark makes the mole pop golden. When a marked mole is popped in any way, the nearest other marked mole within three holes is BONKed one step later (TIC), so marks chain into a tic-tac (at most 6 ticks per chain). Recipes with the Clock (Echo Chime, Ticking Circuit, Time Loop...) jump to marked moles too.