Add external rule description URLs for ESLint and CodeQL

[esbena]

Both ESLint and CodeQL have predictable URLs for the descriptions of their rules.

Examples:

• ESLint: security-node/non-literal-reg-expr is hosted at https://github.com/gkouziik/eslint-plugin-security-node/blob/master/docs/rules/non-literal-reg-expr.md
• ESLint: security/regular-expression-dos-and-node is hosted at https://github.com/gkouziik/eslint-plugin-security/blob/master/docs/regular-expression-dos-and-node.md
• CodeQL: js/redos is hosted at https://codeql.github.com/codeql-query-help/javascript/js-redos/
  • (note the translation from / to -!)

For example, add a url property right here for ESLint.

---

(nodejsscan does not appear to host a readable rule overview. Multiple rules for crypto can be seen in a single yaml file)