feat: Robust connection handling, structured logging, and keepalive improvements (v1.5.0)

[okaris]

This PR introduces significant improvements to the recws library:

Key Changes:

• Replace sleep-based connection wait with proper channel synchronization
• Add structured logging with configurable levels (Debug, Info, Warn, Error)
• Improve keepalive mechanism with proper cleanup and better timeout handling
• Add microsecond precision to timestamps
• Enhance error handling and logging throughout
• Improve shutdown method implementation
• Update documentation with quick start guide and features
• Forked repository to github.com/inference.sh/recws

Breaking Changes:

• Removed NonVerbose flag in favor of LogLevel configuration
• Changed connection handling in Dial() to properly wait for establishment

Credits:
Original work by recws-org/recws is preserved and acknowledged in the README.

[okaris]

Most likely fixes all:
#57
#20
#43
#42
#39
#38
#20
#19
#61

[okaris]

Until this is merged and published, feel free to use my fork https://github.com/inference-sh/recws

[loeffel-io]

Amazing, thanks! please change the inference-sh infos to recws for a proper review

[loeffel-io]

first look: we need a logger interface that we could put into the recws conn

[okaris]

you're right, i was overthinking it with the wrapper. slog already gives us everything we need. just exposed it as a logger config in RecConn so users can configure it cleanly from outside. Added a proper example in advanced.go showing how to set it up.

PR incoming with the proper urls

[okaris]

Closing in favor of #63