Add detection for jquery-migrate (#1913)

This can be tested [here](japaneseruleof7.com/poverty-in-japan/).

A lot of people are using this script because they are too lazy to update to the latest version of jquery.

src/apps.json

@@ -10445,6 +10445,15 @@
 			],
 			"website": "http://jquery.com"
 		},
+		"jQuery Migrate": {
+			"cats": [
+				"12"
+			],
+			"icon": "jQuery.svg",
+			"implies": "jQuery",
+			"script": "/jquery-migrate(?:\\.min)?\\.js(?:\\?ver=([\\d.]+))?\\;version:\\1",
+			"website": "https://plugins.jquery.com/migrate/"
+		},
 		"jQuery Mobile": {
 			"cats": [
 				"26"