Add Bengali adjective and verb templates
The templates were provided by [[User:Bodhisattwa]] [1],
[[User:Mahir256]] [2] and [[User:Tanay barisha]] [3] at
[[Wikidata:Wikidata Lexeme Forms/Bengali]] [4] – thank you!
[1]: https://www.wikidata.org/wiki/User:Bodhisattwa
[2]: https://www.wikidata.org/wiki/User:Mahir256
[3]: https://www.wikidata.org/wiki/User:Tanay_barisha
[4]: https://www.wikidata.org/wiki/Wikidata:Wikidata_Lexeme_Forms/Bengali