Extended Tooltipd: research: include as submodule from original

[alek13]

Previously mod was on a strange and unhandy repo-platform. Now it here https://codeberg.org/Wuzzy/minetest_tt_base And (I hope) now we can use it as submodule. Need research (and add tasks) which code we need to PR to origin.

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edit:

_ttbase needs:

• translations [merged]: https://codeberg.org/Wuzzy/minetest_tt_base/pulls/3
• groups translations [in-discussion]: https://codeberg.org/Wuzzy/minetest_tt_base/issues/2

solution:

• [x] #1503

[alek13]

Needs https://codeberg.org/Wuzzy/minetest_tt_base/pulls/3