[FR] Improve support for the "term" template

[BoboTiG]

• Wiktionary page: https://fr.wiktionary.org/wiki/intergouvernemental

Wikicode:

{{term|lang=fr|droit international public}}

Output:

<i>(Lang=fr)</i>

Expected:

<i>(Droit international public)</i>

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Model link, if any: https://fr.wiktionary.org/wiki/Mod%C3%A8le:term

Looking at the model, we are missing several use cases. Even if there can be a lot of keywords arguments, only a few are needed in order to cover all possibilities.

[lasconic]

oops I have it ready

[lasconic]

Forgot to assign myself
:(

[BoboTiG]

No worries :D