feat: enable IP version specification for realtime app

[dudlf]

What kind of change does this PR introduce?

feature

What is the current behavior?

Machine which does not support IPv6 can't run realtime due to there is no options for this.

What is the new behavior?

User can specify IP version for realtime app. Default behavior does not change.

Additional context

I'm new to supabase, and does not have any experience on Elixir and Phoenix. Is there any possible issue when realtime is binded to IPv4?

[w3b6x9]

@dudlf are you currently having issues connecting Realtime server via IPv4? are you self-hosting?

[dudlf]

@dudlf are you currently having issues connecting Realtime server via IPv4? are you self-hosting?

I'm using self-hosting.

[Silur]

self hosting doesn't work on systems where ipv6 is explicitly disabled (by sysctl or kernel flags), so an ip family flag/setting is indeed preferred

[TeeWallz]

I experienced the issue this resolves today,

This PR would be really appreciated

[github-actions[bot]]

:tada: This PR is included in version 0.25.0 :tada:

The release is available on GitHub release

Your semantic-release bot :package::rocket: