Write custom rules with the new Playground

Organizations face unique security challenges, and Semgrep addresses these by offering custom rules tailored to specific security needs, helping to enforce internal functions and reduce false positives. These custom rules have proven effective in catching and preventing vulnerabilities, thus saving time and resources. Semgrep's Playground allows users to write, test, and refine custom rules efficiently, with recent enhancements enabling rule creation in under ten minutes. Users can fork existing rules from the Registry, collaborate with others, and share rules both privately and publicly. Once ready, rules can be added to a Rule Board to monitor their performance across codebases, with community support available via Slack for additional assistance.