New experimental [DynamicRegex] badge (#10985)

* First implementation

* block ReDoS attack by using a vm to timeout the regex operations

* added tests

* Use re2 instead of regex

And add configurable noMatch value

* Added 'experimental' note

* Reorder tests + include ReDoS

* Remove Service suffix

* validate flags

* remove noMatch and throw InvalidResponse instead

* throw InvalidParameter for SyntaxError only + test

* extra _request parameters

* concise title

* unsupported -> unstructured

* improve replacement string documentation

* extra cleanup

* validate flags before fetching url + extract transform and validate code

* spec.js instead of tester.js tests

* restore service tests and fix refactor issues

* remove obsolete noMatch

* improve redos tests based on pr feedback

* only allow flags that are documented and supported

* slight flags improvement

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Co-authored-by: chris48s <[email protected]>

Author: TrianguloY