The `afrim-data` should be serve by the server as static file

[pythonbrad]

Description

Currently, GitHub is used as CDN to access the afrm-data, but there is a rate limiter that can result in bad user experience.

lewa-type/app/templates/home.html

Line 393 in 45356a1

configUrl: "https://raw.githubusercontent.com/fodydev/afrim-data/4b177197bb37c9742cd90627b1ad543c32ec791b/{{ selected_lang }}/{{ selected_lang }}.toml",

Possible solution

The afrim-data should serve by the server as static files.
We can use git submodule for it, to avoid including afrim-data in the source code.