move bin/naga.rs to a separate crate in workspace (#938)

* move bin/naga.rs to a separate crate

* enable all shader languages for naga binary

* [naga-cli] add env logger

* [naga-cli] remove unneccessary code

* [naga-cli]enable glsl-validate feature

* move naga-cli to cli, add trailing newline

* remove commented env_logger dependency