Move old TXM source code SVN repositories to new archive GIT repositories

The 2 SVN repositories, SourceForge and Redmine Forge CB has been converted to GIT repositories via “git svn clone” command. The history seems well kept.
The repositories are very large (around 4Gb each), surely too large for GitLab.
We need to remove some files from them.
Then, mix them as one repository if possible, otherwise keep 2 GIT repositories.
Then upload them on GitLab.
Need to define the repos names.

ZIP files are here : https://sharedocs.huma-num.fr/#/948/9592/TXM/logiciel/Sources

(from redmine: issue id 3479, created on 2023/10/25 by Sebastien Jacquot)