Add sounds for slime block

mods/ITEMS/mcl_core/nodes.lua

@@ -1332,6 +1332,12 @@ minetest.register_node("mcl_core:slimeblock", {
 	-- According to Minecraft Wiki, bouncing off a slime block from a height off 255 blocks should result in a bounce height of 50 blocks
 	-- bouncy=44 makes the player bounce up to 49.6. This value was chosen by experiment.
 	groups = {dig_immediate=3, bouncy=44,fall_damage_add_percent=-100,deco_block=1},
+	sounds = {
+		dig = {name="slimenodes_dig", gain=0.3},
+		dug = {name="slimenodes_dug", gain=0.6},
+		place = {name="slimenodes_place", gain=0.6},
+		footstep = {name="slimenodes_step", gain=0.3},
+	},
 	_mcl_blast_resistance = 0,
 	_mcl_hardness = 0,
 })