Add detection from Swiftype

This can be tested on [this](https://www.simonholywell.com/post/2010/09/15-excellent-resources-for-php-extension-development/) site

src/apps.json

@@ -7427,6 +7427,15 @@
 			},
 			"website": "swiftlet.org"
 		},
+		"Swiftype": {
+			"cats": [
+				29
+			],
+			"script": "swiftype\\.com/embed\\.js$",
+			"icon": "swiftype.png",
+			"env": "Swiftype",
+			"website": "swiftype.com"
+		},
 		"Symfony": {
 			"cats": [
 				18