i18n: Add Bengali, Catalan, Basque, Sinhala and Slovak

Add languages even if translation is <= 25%

src/invidious/helpers/i18n.cr

@@ -1,8 +1,7 @@
-# "bn_BD"   => load_locale("bn_BD"),   # Bengali (Bangladesh)  [Incomplete]
-# "eu"      => load_locale("eu"),      # Basque  [Incomplete]
-# "sk"      => load_locale("sk"),      # Slovak  [Incomplete]
 LOCALES_LIST = {
   "ar"      => "العربية",               # Arabic
+  "bn"      => "বাংলা",                 # Bengali
+  "ca"      => "Català",                # Catalan
   "cs"      => "Čeština",               # Czech
   "da"      => "Dansk",                 # Danish
   "de"      => "Deutsch",               # German
@@ -11,6 +10,7 @@ LOCALES_LIST = {
   "eo"      => "Esperanto",             # Esperanto
   "es"      => "Español",               # Spanish
   "et"      => "Eesti keel",            # Estonian
+  "eu"      => "Euskara",               # Basque
   "fa"      => "فارسی",                 # Persian
   "fi"      => "Suomi",                 # Finnish
   "fr"      => "Français",              # French
@@ -32,6 +32,8 @@ LOCALES_LIST = {
   "pt-PT"   => "Português de Portugal", # Portuguese (Portugal)
   "ro"      => "Română",                # Romanian
   "ru"      => "Русский",               # Russian
+  "si"      => "සිංහල",                 # Sinhala
+  "sk"      => "Slovenčina",            # Slovak
   "sl"      => "Slovenščina",           # Slovenian
   "sq"      => "Shqip",                 # Albanian
   "sr"      => "Srpski (latinica)",     # Serbian (Latin)