[Rules] Add Dynamic Redirects

[pedrosousa]

Addresses PCX-4677.

[gitguardian[bot]]

⚠️ GitGuardian has uncovered 1 secret following the scan of your pull request.

Please consider investigating the findings and remediating the incidents. Failure to do so may lead to compromising the associated services or software components.

🔎 Detected hardcoded secret in your pull request

GitGuardian id	Secret	Commit	Filename
4092891	Generic High Entropy Secret	6ded3c7eb251d03c1508f889109779c58dca08ab	config.toml	View secret

🛠 Guidelines to remediate hardcoded secrets

1. Understand the implications of revoking this secret by investigating where it is used in your code.
2. Replace and store your secret safely. Learn here the best practices.
3. Revoke and rotate this secret.
4. If possible, rewrite git history. Rewriting git history is not a trivial act. You might completely break other contributing developers' workflow and you risk accidentally deleting legitimate data.

To avoid such incidents in the future consider

• following these best practices for managing and storing secrets including API keys and other credentials
• install secret detection on pre-commit to catch secret before it leaves your machine and ease remediation.

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<sup>🦉 GitGuardian detects secrets in your source code to help developers and security teams secure the modern development process. You are seeing this because you or someone else with access to this repository has authorized GitGuardian to scan your pull request.

Our GitHub checks need improvements? Share your feedbacks!</sup>

[cloudflare-workers-and-pages[bot]]

Deploying with    Cloudflare Pages

Latest commit:	7f70a21
Status:	✅  Deploy successful!
Preview URL:	https://1ec8c747.cloudflare-docs-7ou.pages.dev
Branch Preview URL:	https://pedro-pcx-4677-dynamic-redir.cloudflare-docs-7ou.pages.dev

View logs

[pedrosousa]

Preview of the new section: https://pedro-pcx-4677-dynamic-redir.cloudflare-docs-7ou.pages.dev/rules/url-forwarding/dynamic-redirects/