nichibutsu/cclimber.cpp: Improves Swimmer driver and adds a new game set (#12446)

New machines added as WORKING
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Au (Swimmer conversion) [Neill Baker Tech]

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Co-authored-by: hap <[email protected]>

Author: NeilBakersTech

src/mame/mame.lst

@@ -33894,6 +33894,7 @@ terrafu                         // (c) 1987 Nichibutsu USA
 terrafua                        // (c) 1987 Nichibutsu USA
 
 @source:nichibutsu/cclimber.cpp
+au                              // hack
 bagmanf                         // bootleg on Falcon FCK-00 (Falcon Crazy Kong) PCB
 bigkong                         // bootleg
 cannonb                         // (c) 1985 Soft