[Enhancement]: Support brotli with caddy

[MarArMar]

[Enhancement]:

This works well with Coolify's caddy :

website.com {
	# Enable response compression (Gzip, Brotli)
	encode gzip 
}

This does not, the whole proxy fails :

website.com {
	# Enable response compression (Gzip, Brotli)
	encode gzip br
}

[AlejandroAkbal]

Yes, and for traefik too