Add the Moore language (mos)

Requested for translatewiki at:
https://translatewiki.net/wiki/Thread:Support/Add_the_Moore_language

Autonym according to Ethnologue.

data/langdb.yaml

@@ -406,6 +406,7 @@ languages:
   mnw: [Mymr, [AS], ဘာသာ မန်]
   mo: [Cyrl, [EU], молдовеняскэ]
   moe: [Latn, [AM], innu-aimun]
+  mos: [Latn, [AF], moore]
   mr: [Deva, [AS, ME], मराठी]
   mrh: [Latn, [AS], Mara]
   mrj: [Cyrl, [EU], кырык мары]

data/language-data.json

@@ -2596,6 +2596,13 @@
             ],
             "innu-aimun"
         ],
+        "mos": [
+            "Latn",
+            [
+                "AF"
+            ],
+            "moore"
+        ],
         "mr": [
             "Deva",
             [
@@ -4777,6 +4784,7 @@
             "wa"
         ],
         "BF": [
+            "mos",
             "fr",
             "ff"
         ],