Make file sync node ports overridable in .env

[Soukyuu]

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Clear and concise description of the problem

I have another service which is already using port 8001, thus currently, anysync won't start. I can't change my other service's port, because that would require re-configuring several clients from scratch.

Suggested solution

Make the ports configurable via .env.override as other ports are.

Alternative

So far I attempted editing the yaml directly, which will break on any update, I suppose.

Additional context

No response

[fb929]

I added variables of the type ANYSYNC*_METRIC_ADDR to allow configuring this. Please try using the latest "main".