Deprecate govaluate for internal expression engine

[Mzack9999]

With the planned introduction of goja the internal govaluate to resolve expressions between markers should be replaced with an embedded scripting engine equivalent one.

• For matchers it's necessary to wrap the js login within an helper function returning a boolean value
• Extractors should execute the js logic and infer the output values

A previous working implementation with python at #914 for reference, besides code divergences, it's just necessary to drop the nebula engine and adapt the syntax to js. This requires the implementation of projectdiscovery/dsl#79 to enable dsl global functions within the engine itself