Allow safe methods for getStaticValue

[RunDevelopment]

This allows calls to safe instance methods of arrays and strings.

"Safe method" means that the method:

1. Does not modify any of its parameters and the this argument.
2. Is fast. The method must be efficient to execute.
3. Does not consume much memory. The result of the method must consume an unreasonable amount of memory.
4. Is deterministic and locale-independent.

Maybe more interesting than what safe methods are is what isn't a safe method. Here are a few example of non-safe methods:

• Array#pop: This modifies the array.
• Array#map and Array#flatMap: It is possible to create arbirarly large arrays using map + flat and flatMap (assuming user-defined function evaluation).
• String#localeCompare: The result depends on the system the code is executed, so it's not deterministic.
• String#{match,matchAll,replace,replaceAll,split}: RegExp execution isn't safe because it can take up to exponential time.
• String#{matchAll,replace,replaceAll,split}: This be used to exponentially grow strings or arrays.

I also didn't include any of HTML-creating string methods (e.g "".big()).

[MichaelDeBoey]

Hi @RunDevelopment! 👋

As mentioned in #40 (comment), we forked this repo into the @eslint-community GitHub organization & are maintaining it to not hold the wider community back anymore.

I would suggest to take a look at our fork & if you think this PR is still necessary/valuable, please create a PR on our fork & we'll look into merging it asap.