Add five languages of Taiwan

ais, ami, tay, trv, xsy

For reference, see
https://translatewiki.net/wiki/Thread:Support/Request_4_languages_of_Indigenous_Taiwanese

data/generated-langdb.json

@@ -86,6 +86,13 @@
             ],
             "अहिराणी"
         ],
+        "ais": [
+            "Latn",
+            [
+                "AS"
+            ],
+            "Sakizaya"
+        ],
         "ak": [
             "Latn",
             [
@@ -114,6 +121,13 @@
             ],
             "አማርኛ"
         ],
+        "ami": [
+            "Latn",
+            [
+                "AS"
+            ],
+            "Pangcah"
+        ],
         "an": [
             "Latn",
             [
@@ -3097,6 +3111,13 @@
             ],
             "தமிழ்"
         ],
+        "tay": [
+            "Latn",
+            [
+                "AS"
+            ],
+            "Tayal"
+        ],
         "tcy": [
             "Knda",
             [
@@ -3244,6 +3265,13 @@
             ],
             "Ṫuroyo"
         ],
+        "trv": [
+            "Latn",
+            [
+                "AS"
+            ],
+            "Sediq Taroko"
+        ],
         "ts": [
             "Latn",
             [
@@ -3503,6 +3531,13 @@
             ],
             "მარგალური"
         ],
+        "xsy": [
+            "Latn",
+            [
+                "AS"
+            ],
+            "SaiSiyat"
+        ],
         "ydd": [
             "Hebr",
             [
@@ -5171,7 +5206,8 @@
         ],
         "TW": [
             "zh-hant",
-            "zh"
+            "zh",
+            "trv"
         ],
         "TZ": [
             "sw",