Add Levantine Arabic (apc)

This replaces ajp, according to ISO's decision to merge
it into apc:
https://iso639-3.sil.org/code/ajp

Follow-up to
3ba6536d85

data/langdb.yaml

@@ -17,9 +17,11 @@ languages:
   agq: [Latn, [AF], aghɨ̂m]
   ahr: [Deva, [AS], अहिराणी]
   ajg: [Latn, [AF], ajagbe]
-  ajp: [Arab, [ME], شامي]
-  ajp-arab: [ajp]
-  ajp-latn: [Latn, [ME], šāmi]
+ # The code ajp was deprecated by ISO and merged into apc:
+ # https://iso639-3.sil.org/code/ajp
+  ajp: [apc]
+  ajp-arab: [apc]
+  ajp-latn: [apc-latn]
   ak: [Latn, [AF], Akan]
   akz: [Latn, [AM], Albaamo innaaɬiilka]
   ale: [Latn, [AM, AS], unangam tunuu]
@@ -32,6 +34,9 @@ languages:
   ang: [Latn, [EU], Ænglisc]
   ann: [Latn, [AF], Obolo]
   anp: [Deva, [AS], अंगिका]
+  apc: [Arab, [ME], شامي]
+  apc-arab: [apc]
+  apc-latn: [Latn, [ME], šāmi]
   ar: [Arab, [AF, ME], العربية]
   arc: [Syrc, [ME], ܐܪܡܝܐ]
   arn: [Latn, [AM], mapudungun]

data/language-data.json

@@ -122,21 +122,13 @@
             "ajagbe"
         ],
         "ajp": [
-            "Arab",
-            [
-                "ME"
-            ],
-            "شامي"
+            "apc"
         ],
         "ajp-arab": [
-            "ajp"
+            "apc"
         ],
         "ajp-latn": [
-            "Latn",
-            [
-                "ME"
-            ],
-            "šāmi"
+            "apc-latn"
         ],
         "ak": [
             "Latn",
@@ -224,6 +216,23 @@
             ],
             "अंगिका"
         ],
+        "apc": [
+            "Arab",
+            [
+                "ME"
+            ],
+            "شامي"
+        ],
+        "apc-arab": [
+            "apc"
+        ],
+        "apc-latn": [
+            "Latn",
+            [
+                "ME"
+            ],
+            "šāmi"
+        ],
         "ar": [
             "Arab",
             [
@@ -5616,6 +5625,7 @@
             "he",
             "en",
             "ar",
+            "apc",
             "ru",
             "ro",
             "yi",
@@ -5739,6 +5749,7 @@
         ],
         "JO": [
             "ar",
+            "apc",
             "en"
         ],
         "JP": [
@@ -6152,7 +6163,8 @@
             "en"
         ],
         "PS": [
-            "ar"
+            "ar",
+            "apc"
         ],
         "PT": [
             "pt",
@@ -6354,6 +6366,7 @@
         ],
         "SY": [
             "ar",
+            "apc",
             "ku-latn",
             "fr",
             "hy"