Add Yonaguni (yoi)

Requested at
https://translatewiki.net/wiki/Thread:Support/Adding_a_new_language,_ISO_639-3:_yoi_(Request)

data/langdb.yaml

@@ -683,6 +683,7 @@ languages:
   ydd: [yi]
   yi: [Hebr, [ME, EU, AM], ייִדיש]
   yo: [Latn, [AF], Yorùbá]
+  yoi: [Jpan, [AS], 与那国物言]
   yrk: [Cyrl, [AS], ненэцяʼ вада]
   yrl: [Latn, [AM], Nhẽẽgatú]
   yua: [Latn, [AM], "Maaya T'aan"]

data/language-data.json

@@ -4483,6 +4483,13 @@
             ],
             "Yorùbá"
         ],
+        "yoi": [
+            "Jpan",
+            [
+                "AS"
+            ],
+            "与那国物言"
+        ],
         "yrk": [
             "Cyrl",
             [