Add support for /etc/hosts, dnsmasq and Config files like nginx config.

[Abhinav1217]

Is your feature request related to a problem? Please describe.

I am missing highlight on /etc/hosts, nginx.conf. I currently use extra extension to support them but I would like them in one extension.

Describe alternatives you've considered
https://github.com/foxundermoon/vs-shell-format has support for /etc/hosts file. That plugin is more focused towards Java Development, while your project is more generic, Hence I thought this would be a healthy choice here.