add lang fr-CA

[tdhock]

Hi @cderv
As you suggested in #14012
here is a new file for fr-CA.
Does that look ok to you?
Merci !

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[cderv]

Thanks for the new PR. Yes this is good !

Though I was not precise enough: there should be inheritance and merge in the sense that

• _language-fr-CA.yml will be read
• _language-fr.yml will be read

Both will be merged, meaning the former can only include what needs to be override in the later.

That would simplify maintenance.

To be tested for confirmation.

[tdhock]

Thanks for your quick feedback.
I removed everything except the two author lines.
I don’t know how to write a test though.