Support passing a config file to set flags

[coderofstuff]

In golang Kaspad, you are able to pass in config flags by doing

kaspad -C config.conf
kaspad --configfile config.conf

Provide that same functionality in rusty kaspad.

Relevant file in rust: kaspad/src/args.rs

Requirements:

• file format can be whatever is easiest to support
• cli flags passed explicitly should override the values in the config file

[Pablo Escaida]

Hello @coderofstuff is there anything going on here?
Could you assign this to me?

Thanks and regards from Barcelona

[aspect]

Can you please join #development on Kaspa Discord.