feat(adapter/postgres): wip postgres remote adapter

[Totodore]

Motivation

Add a postgres adapter implementation for socket.io clusters.

Closes issue #423

TODO:

• Offload binary / > 8KB payloads to attachment table
• Implement attachment item pruning
• Documentation / Examples

[codspeed-hq]

Merging this PR will not alter performance

✅ 87 untouched benchmarks

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_{Comparing postgres-adapter (ef327b8) with main (4373e08)}