Change hak configuration in line with core MediaWiki (#371)

Core MediaWiki now uses three separate codes for
three scripts, and one code that includes two names.
See https://gerrit.wikimedia.org/r/c/mediawiki/core/+/876411

data/language-data.json

@@ -1795,11 +1795,11 @@
             "X̱aat Kíl"
         ],
         "hak": [
-            "Latn",
+            "Hant",
             [
                 "AS"
             ],
-            "Hak-kâ-fa"
+            "客家語 \/ Hak-kâ-ngî"
         ],
         "hak-hans": [
             "Hans",
@@ -1815,6 +1815,13 @@
             ],
             "客家語（繁體）"
         ],
+        "hak-latn": [
+            "Latn",
+            [
+                "AS"
+            ],
+            "Hak-kâ-ngî (Pha̍k-fa-sṳ)"
+        ],
         "haw": [
             "Latn",
             [