Add Malayalam proper noun template

The template was provided by [[User:Vis M]] [1] at [[Wikidata:Wikidata
Lexeme Forms/Malayalam]] [2] – thank you!

[1]: https://www.wikidata.org/wiki/User:Vis_M
[2]: https://www.wikidata.org/wiki/Wikidata:Wikidata_Lexeme_Forms/Malayalam