[TESTING] Gas testing the new `functionFacetPairs()` function

[mudgen]

Testing Issue

There is a new proposal for a new standard for diamonds, which is here.

There is a question about this: If a diamond has thousands of functions will the functionFacetPairs() function not work because it is too much gas?

So we need to gas test it, to see how many functions it can return. This function is meant to be called offchain.

Major RPC providers such Alchemy and Infura have max gas cap limits up to around 550 million gas.

I want to see how many selector/facet pairs the functionFacetPairs() function can return using these amounts of gas:

1. 10 million gas
2. 50 million gas
3. 100 million gas
4. 300 million gas
5. 500 million gas

The implementation of functionFacetPairs() to test is here:
https://gist.github.com/mudgen/92a2e53b9a59817012dba2c72c8d84aa

Please submit a pull request with the code and a report that shows the gas test results.

This issue is time sensitive, it would be good if this could be done today.

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[mudgen]

@AnInsaneJimJam Happy for you to work on this if you are available today.

[AnInsaneJimJam]

Yes, I will start working on this

[mudgen]

@AnInsaneJimJam Thank you!
It is assigned to you.

[AnInsaneJimJam]

I have added PR for this: #251