Add shy-latn and szy

Shawiya/Tacawit and Sakizaya. Both have wikiprojects that are live, and their
omission from language-data makes it impossible to find them with the ULS.

data/langdb.yaml

@@ -504,6 +504,7 @@ languages:
   shi-tfng: [Tfng, [AF], ⵜⴰⵛⵍⵃⵉⵜ]
   shi: [shi-latn]
   shn: [Mymr, [AS], လိၵ်ႈတႆး]
+  shy-latn: [Latn, [AF], tacawit]
   si: [Sinh, [AS], සිංහල]
   simple: [en-simple]
   sjd: [Cyrl, [EU], Кӣллт са̄мь кӣлл]
@@ -543,6 +544,7 @@ languages:
   swb: [Latn, [AF], Shikomoro]
   sxu: [Latn, [EU], Säggssch]
   szl: [Latn, [EU], ślůnski]
+  szy: [Latn, [AS], Sakizaya]
   ta: [Taml, [AS], தமிழ்]
   tay: [Latn, [AS], Tayal]
   tcy: [Knda, [AS], ತುಳು]

language-data.json

@@ -3258,6 +3258,16 @@
             ],
             "လိၵ်ႈတႆး"
         ],
+        "shy-latn": [
+            "Latn",
+            [
+                "AF"
+            ],
+            "tacawit"
+        ],
+        "shy": [
+            "shy-latn"
+        ],
         "si": [
             "Sinh",
             [
@@ -3513,6 +3523,13 @@
             ],
             "ślůnski"
         ],
+        "szy": [
+            "Latn",
+            [
+                "AS"
+            ],
+            "Sakizaya"
+        ],
         "ta": [
             "Taml",
             [
@@ -4595,6 +4612,7 @@
             "ar",
             "fr",
             "kab",
+            "shy-latn",
             "en"
         ],
         "EA": [
@@ -5676,6 +5694,7 @@
         "TW": [
             "zh-hant",
             "zh",
+            "szy",
             "trv"
         ],
         "TZ": [