add missing file to puzzles

Change-Id: I63b80718f48eede54c3312d9e66c77bfd2472a79

apps/plugins/puzzles/SOURCES.games

@@ -0,0 +1,39 @@
+blackbox.c
+bridges.c
+cube.c
+dominosa.c
+fifteen.c
+/*filling.c*/
+flip.c
+flood.c
+galaxies.c
+guess.c
+inertia.c
+/*keen.c*/
+lightup.c
+/*loopy.c*/
+magnets.c
+map.c
+/*mines.c*/
+net.c
+netslide.c
+/*palisade.c*/
+pattern.c
+pearl.c
+pegs.c
+range.c
+rect.c
+samegame.c
+signpost.c
+singles.c
+sixteen.c
+slant.c
+/*solo.c*/
+tents.c
+/*towers.c*/
+tracks.c
+twiddle.c
+/*undead.c*/
+/*unequal.c*/
+unruly.c
+/*untangle.c*/