feat: adds new chart options to management, signal and dashboard

[diegocn]

This PR aims to add a few new options to configure netbird components like:

• signal protocol option between grpc, http and https
• an option to change the signal port
• changes signal log output to stdout instead of a file
• adds a workaround to disable ipv6 directive (listen) from nginx (dashboard) conf

That workaround isn't the best approach, definitely, but I did it just for the sake of simplicity and to make the chart run.

A better approach, for example, would be having a configmap with nginx's default.conf snippet templatized to handle that specific ipv6 param (and maybe other params) properly, through the chart itself.

[diegocn]

Hi, @jnodorp-jaconi just bumping up in case you did not receive the PR opened alert.

[jnodorp-jaconi]

@diegocn FYI, I get this error from netbird-management after applying your changes:

panic: unexpected config protocol type grpc

I will change the default back to https. Missed that during review.

[diegocn]

hey @jnodorp-jaconi thanks for the feedback!