Docs: Contributing folder

[mendonk]

The Contributing docs pages required a refresh.

• Contributing GitHub issues - confirmed this has not changed, cleaned up
• Telemetry - confirmed this has not changed, cleaned up
• How to Contribute Code - has been updated to reflect using uv before the makefile, cleaned up. Added guidance on descriptive PR titles for better release notes.
  @ogabrielluiz Please double check me on the Poetry and NPM local run, I'm not sure if this is up-to-date or useful. Thank you.

[codspeed-hq]

CodSpeed Performance Report

Merging #4415 will degrade performances by 16.78%

_{Comparing docs-telemetry-and-contributing (70d8e35) with main (01de9ef)}

Summary

⚡ 1 improvements
❌ 1 regressions
✅ 14 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	docs-telemetry-and-contributing	Change
⚡	test_load_flows	1,188.5 µs	982.9 µs	+20.92%
❌	test_successful_run_with_output_type_debug	375.6 ms	451.4 ms	-16.78%