Add Scribunto namespaces for avk, gcr and shy-latn

Add namespaces for Kotava, Guianan Creole and Shawiya languages.
As reported on, respectively,
https://incubator.wikimedia.org/wiki/Special:PermaLink/4661225#Kotava_namespaces ,
https://incubator.wikimedia.org/wiki/Talk:Wp/gcr , and
https://incubator.wikimedia.org/wiki/Talk:Wt/shy

Bug: T238109
Bug: T238110
Change-Id: I8b52467805f04cc6283283535b268a4cff5022ef

Scribunto.namespaces.php

@@ -38,6 +38,11 @@ $namespaceNames['atj'] = [
 	829 => 'Aitapihikan_ke_ici_aimihitonaniwok',
 ];
 
+$namespaceNames['avk'] = [
+	828 => 'Siba',
+	829 => 'Sibaprilara',
+];
+
 $namespaceNames['azb'] = [
 	828 => 'ماژول',
 	829 => 'ماژول_دانیشیغی',
@@ -193,6 +198,11 @@ $namespaceNames['fr'] = [
 	829 => 'Discussion_module',
 ];
 
+$namespaceNames['gcr'] = [
+	828 => 'Modjoul',
+	829 => 'Diskisyon_modjoul',
+];
+
 $namespaceNames['gd'] = [
 	828 => 'Mòideal',
 	829 => 'Deasbaireachd_mòideil',
@@ -452,6 +462,11 @@ $namespaceNames['shn'] = [
 	829 => 'ဢုပ်ႇၵုမ်_မေႃႇၵျူး',
 ];
 
+$namespaceNames['shy-latn'] = [
+	828 => 'Amṣada',
+	829 => 'Amṣada_tameslayt',
+];
+
 $namespaceNames['sk'] = [
 	828 => 'Modul',
 	829 => 'Diskusia_k_modulu',