Missing ISO language names when setting locales in config/translatable.php

[armin-salihovic]

Description

When adding certain locales in config/translatable.php, the ISO language names will appear only as the language code in the edit page.

Steps to reproduce

1. enable translations
2. add a locale that is missing to config/translatable.php, for example bs:
   'locales' => [ 'en', 'bs', ],
3. open the edit page in Twill and observe the save bar

Expected result

Correct display of the ISO language name.

Actual result

Missing ISO language name, e.g. in the edit page:

Versions

Twill version: 3.0.0
Laravel version: 9.52
PHP version: 8.2

Suggested fix

I extracted the language codes that are missing. I suggest adding the following to the return of the function getCodeToLanguageMappings in src/Helpers/i18n_helpers.php to complete the code to language mappings:

'ak' => 'Akan',
'av' => 'Avaric',
'ae' => 'Avestan',
'bm' => 'Bambara',
'bs' => 'Bosnian',
'ch' => 'Chamorro',
'ce' => 'Chechen',
'ny' => ['Chewa', 'Nyanja'],
'cu' => 'Church Slavonic',
'cv' => 'Chuvash',
'kw' => 'Cornish',
'cr' => 'Cree',
'dv' => ['Maldivian', 'Dhivehi'],
'ee' => 'Ewe',
'ff' => 'Fulah',
'lg' => 'Ganda',
'ki' => 'Gikuyu, Kikuyu',
'hz' => 'Herero',
'ho' => 'Hiri Motu',
'ig' => 'Igbo',
'kr' => 'Kanuri',
'kv' => 'Komi',
'kg' => 'Kongo',
'kj' => ['Kuanyama', 'Kwanyama'],
'lb' => ['Luxembourgish', 'Letzeburgesch'],
'lu' => 'Luba-Katanga',
'mh' => 'Marshallese',
'nv' => ['Navaho', 'Navajo'],
'nd' => 'Northern Ndebele',
'ng' => 'Ndonga',
'se' => 'Northern Sami',
'nb' => 'Norwegian Bokmål',
'nn' => 'Norwegian Nynorsk',
'oj' => 'Ojibwa',
'os' => ['Ossetic', 'Ossetian'],
'pi' => 'Pali',
'sc' => 'Sardinian',
'nr' => 'South Ndebele',
'ty' => 'Tahitian',
've' => 'Venda',
'za' => 'Zhuang',