Add haddock detection

This can be tested
[here](https://downloads.haskell.org/~ghc/latest/docs/html/libraries/)
or
[here](https://hackage.haskell.org/package/lens-4.15.1/docs/Control-Lens-Operators.html)

src/apps.json

@@ -3183,6 +3183,15 @@
 			"icon": "http2.png",
 			"website": "http2.github.io"
 		},
+		"Haddock": {
+			"cats": [
+				4
+			],
+			"html": "<p>Produced by <a href=\"http://www.haskell.org/haddock/\">Haddock</a> version ([0-9.]+)</p>\\;version:\\1",
+			"icon": "default.png",
+			"script": "haddock-util\\.js",
+			"website": "www.haskell.org/haddock/"
+		},
 		"Hammer.js": {
 			"cats": [
 				12