Add security docs#191

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krishn-cpu wants to merge 3 commits intoaboutcode-org:mainfrom

krishn-cpu:add-security-docs

Commits on Apr 10, 2025

Add security documentation and templates
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docs: Add unified contributing guidelines for AboutCode projects - Consolidate practices, standardize tooling, and use python-inspector as reference
krishn-cpu
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docs: Add error handling guidelines and discourage use of assert statements
krishn-cpu
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