Add Chitonga (toi) and Chiluvale (lue)

Downstream task:
https://phabricator.wikimedia.org/T368856

data/langdb.yaml

@@ -440,6 +440,7 @@ languages:
   ltg: [Latn, [EU], latgaļu]
   lua: [Latn, [AF], ciluba]
   lud: [Latn, [EU], lüüdi]
+  lue: [Latn, [AF], chiluvale]
   luo: [Latn, [AF], dholuo]
   lus: [Latn, [AS], Mizo ţawng]
   lut: [Latn, [AM], dxʷləšucid]
@@ -737,6 +738,7 @@ languages:
   tmr: [Hebr, [ME, EU, AM], ארמית בבלית]
   tn: [Latn, [AF], Setswana]
   to: [Latn, [PA], lea faka-Tonga]
+  toi: [Latn, [AF], chitonga]
   tok: [Latn, [WW], toki pona]
   tokipona: [tok]
   tpi: [Latn, [PA, AS], Tok Pisin]