Added a jump sound effect

I also added all of the files for berry sound effects but those arent
implemented yet.

Audio/SFX/Powerup.mp3.import

@@ -0,0 +1,19 @@
+[remap]
+
+importer="mp3"
+type="AudioStreamMP3"
+uid="uid://cjsm81cu4rsk8"
+path="res://.godot/imported/Powerup.mp3-1e1d4ad8a5bd25117e18e68e79b16474.mp3str"
+
+[deps]
+
+source_file="res://Audio/SFX/Powerup.mp3"
+dest_files=["res://.godot/imported/Powerup.mp3-1e1d4ad8a5bd25117e18e68e79b16474.mp3str"]
+
+[params]
+
+loop=false
+loop_offset=0
+bpm=0
+beat_count=0
+bar_beats=4