Add "Pitch" label to sedit

Author: Qualphey

res/main/i18n/default/labels.json

@@ -533,6 +533,7 @@
 		"head_cut": "Head cut",
 		"listen": "Listen",
 		"makeup": "Makeup",
+		"pitch": "Pitch",
 		"predelay": "Pre-delay",
 		"reverse": "Reverse",
 		"sample_num": "Sample #",