Add support for .tpl

[magiceses]

This plugin is very good, i like it!

Is it possible to add a type .tpl, which would be more convenient when kubernetes developers preview many test.sh.tpl or test.py.tpl and other tools?

Thanks.

[sbarex]

Sorry, This is not currently implementable, as it would require an additional step to parse the format starting from the second file extension.