Make listener address configurable & Add support for IPv6

[vosdev]

This PR makes the listener address configurable for both Core and Periphery through the following env vars:

CORE_LISTENER_ADDRESS
PERIPHERY_LISTENER_ADDRESS

But the main purpose of this PR is to add support for IPv6.

Before:

ss -tulpn | grep 120
tcp   LISTEN 0      1024              0.0.0.0:9120       0.0.0.0:*    users:(("core",pid=4694,fd=13))          
tcp   LISTEN 0      1024              0.0.0.0:8120       0.0.0.0:*    users:(("periphery",pid=4702,fd=10))

After:

ss -tulpn | grep 120
tcp   LISTEN 0      1024                      *:8120             *:*    users:(("periphery",pid=163028,fd=9))    
tcp   LISTEN 0      1024                      *:9120             *:*    users:(("core",pid=163036,fd=15))

Fixes #313

[mbecker20]

Thanks for the PR! I've just updated it to merge to 1.17.1 branch so I can include it in the next release.

I do have a change to request, I think the name listener_address may lead to some confusion about what this does, and may lead to users inputing their server's local IP address or something like that. I think my preferred term is bind_ip. This more closely matches the mongo configuration for example, they use bindIp for this: https://www.mongodb.com/docs/manual/reference/configuration-options/#net-options.

I also left a couple comments clarifying the inline docs.

[vosdev]

Made the requested changes :)

[mbecker20]

Perfect, thanks!

[Fisiu]

@vosdev, why did you make IPv6 as default?
As a result, you may encounter errors:

komodo-periphery  | 2025-06-08T14:21:58.222636Z  INFO periphery: Komodo Periphery starting on https://[::]:8120
komodo-periphery  | Error: Address family not supported by protocol (os error 97)

komodo-core       | 2025-06-08T14:21:55.535186Z  INFO core: Komodo Core starting on http://[::]:9120
komodo-core       | Error: failed to start http server
komodo-core       | 
komodo-core       | Caused by:
komodo-core       |     Address family not supported by protocol (os error 97)

With IPv6 as the default, users must adjust their configurations to include the KOMODO_BIND_IP and PERIPHERY_BIND_IP environment variables. Adding these to the .env file is straightforward, but the setup documentation does not cover this.