l10n: port base32 for translation + add french

[sylvestre]

No description provided.

[github-actions]

GNU testsuite comparison:

GNU test failed: tests/basenc/base64. tests/basenc/base64 is passing on 'main'. Maybe you have to rebase?
GNU test failed: tests/basenc/basenc. tests/basenc/basenc is passing on 'main'. Maybe you have to rebase?
Skip an intermittent issue tests/misc/stdbuf (fails in this run but passes in the 'main' branch)

[github-actions]

GNU testsuite comparison:

Skip an intermittent issue tests/timeout/timeout (fails in this run but passes in the 'main' branch)
Skipping an intermittent issue tests/misc/tee (passes in this run but fails in the 'main' branch)