Create report script for clippy warnings

[tashabits]

PURPOSE

Add clippy_report_generator.sh script to generate a styled HTML report from cargo clippy output.
This script provides an easier way to review warnings/errors in a browser rather than parsing raw JSON or terminal logs.

• Resolve manifest path automatically relative to script location
• Support --manifest-path and --out flags for overrides
• Clean up temp files after run
• Generate a self-contained HTML report

ISSUES

• Without this script, developers have to manually parse raw JSON or terminal output from cargo clippy, which is hard to review
• No existing HTML reporting mechanism exists for this

NOTES FOR REVIEWERS

• Verified defaults work when from from project root
• Report is written to clippy_report.html at project root by default
• Script exits with Clippy's return code
• REQUIRES jq, sed, and grep to be present in the environment

[DyanB]

looks good to me!

[rennergade]

This is helpful and we'll definitely use it when cleaning up the clippy errors. I'm not sure we should host it in our repo though since its mostly unrelated to Lind.

Could be a cool tool for you to host somewhere that we'll use?

[tashabits]

This is helpful and we'll definitely use it when cleaning up the clippy errors. I'm not sure we should host it in our repo though since its mostly unrelated to Lind.

Could be a cool tool for you to host somewhere that we'll use?

Is there a tools repo you guys use that I should put it in instead?