Request to add locale Malawian Tumbuka

I would like to apply for the inclusion of the new language below:

LocaleLocale Locale = language version, often a combination of a language code and a region code, for instance es_MX denotes Spanish as it’s used in Mexico. A list of all locales supported by WordPress in tum_MW
Country code: MW
Plural forms: nplurals=2; plural=(n != 1)
Language native name: Tumbuka
Language English name: Malawian Tumbuka
Sub-domain: The community site where WordPress code is created and shared by the users. This is where you can download the source code for WordPress core, plugins and themes as well as the central location for community conversations and organization.
Site Title: Nkhani Mchitumbuka
Site Description: WordPress in Nkhani Mchitumbuka
Admin Usernames: Asambizi, Medie, Mannass and Cosmas