Put all function's name to a dedicated files for easy reference?

[He-Pin]

Motivation:
Currently, all std functions and it's implementation are puted in the Std class, not easy to find out with CRTL + F, how about:

eg:

object StdFunctions {
  val `std.assertEqual(a, b)` = ???
}

for easier search, https://jsonnet.org/ref/stdlib.html

Assertions and Debugging
std.assertEqual(a, b)
Available since version 0.10.0.

Ensure that a == b. Returns true or throws an error message.

[JoshRosen]

I think the motivation for this would be end-user focused, not necessarily sjsonnet-developer-focused: most end users aren't going to want to look at Scala source code to understand the available functions.

I think we can probably just point users to https://jsonnet.org/ref/stdlib.html and say that (as of sjsonnet >= x) we support all standard jsonnet functions. We do have some non-standard additions in the native namespace and those might benefit from documentation in the README, as might any other experimental or new stuff that we add (like regex functions).

[He-Pin]

@JoshRosen Yes thanks, or it is better to have a list somewhere to check which stdlib methods are already supported.