Allow direct connections

[ewanas]

OP#505

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Code Review Checklist

• Description accurately reflects what changes are being made.
• Description explains why the changes are being made (or references an issue containing one).
• The PR appropriately sized.
• New code has enough tests.
• New code has enough documentation to answer "how do I use it?" and "what does it do?".
• Existing documentation is up-to-date, if impacted.

[donpui]

I think we have to merge this together with LeastAuthority/wormhole-william#84. As current w-w version doesn't work correctly and thats why in some case hanging (hanging because sender and receiver looks at different relay services)