Leverage Eclipse collections

[krmahadevan]

@juherr - What is your opinion on us trying to adopt https://eclipse.dev/collections/ ?

The library does claim memory efficiency in terms of sets and maps (and these are two often used collections within TestNG).

I know that we are striving towards ensuring that TestNG does not bring in any dependency unless and until its absolutely needed.

I also know that without evaluating the memory performance bottlenecks of the current system it makes no sense for us to try and leverage a new library.

But still wanted to hear your thoughts on this.