[Feature] detect `.cmake.in` files as cmake files automatically

[Andrej730]

Request Overview

Typically cmake projects have at least 1 .cmake.in template file to produce config.cmake.in, so those file are common.
would be nice if those can be autodetected as cmake files to apply syntax highligting.

Selecting cmake in the bar on the bottom manually works as a workaround.

Additional Information

No response