add missing fly animation

mobs_crocs/init.lua

@@ -170,6 +170,7 @@ if ENABLE_SWIMMERS then
 			speed_normal = 24,	speed_run = 24,
 			stand_start = 0,	stand_end = 80,
 			walk_start = 81,	walk_end = 170,
+			fly_start = 81,		fly_end = 170,
 			run_start = 81,		run_end = 170,
 			punch_start = 205,	punch_end = 220
 		},

mobs_fish/init.lua

@@ -57,6 +57,8 @@ mobs:register_mob("mobs_fish:clownfish", {
 		stand_end = 80,
 		walk_start = 81,
 		walk_end = 155,
+		fly_start = 81,
+		fly_end = 155,
 		run_start = 81,
 		run_end = 155
 	},

mobs_sharks/init.lua

@@ -69,6 +69,8 @@ if ENABLE_SHARK_LARGE then
 			stand_end = 80,
 			walk_start = 80,
 			walk_end = 160,
+			fly_start = 80,
+			fly_end = 160,
 			run_start = 80,
 			run_end = 160
 		},