feat: add claim-rewards-to-self functionality to incentives controller

[SeanJCasey]

This PR adds a claimRewardsToSelf() function to the incentives controller that reuses the same underlying _claimRewards() function as other claim functions, but auto-populating the to field with msg.sender.

[eboadom]

2 comments @SeanJCasey :

• The REVISION will need to be incremented to 2, to follow the upgradeability requirements, here https://github.com/aave/incentives-proposal/pull/4/files#diff-666660e636b6be0369551917c2269b9104d3d24ede682a32f4b027f968738250R30
• Being the second version of the StakedTokenIncentivesController, the initialize() function can be empty, not receiving any parameter here https://github.com/aave/incentives-proposal/pull/4/files#diff-666660e636b6be0369551917c2269b9104d3d24ede682a32f4b027f968738250R55

[eboadom]

I also suggest @SeanJCasey to create mainnet fork tests reproducing a real scenario of claiming rewards from a system that will be using this function. For that you will need to simulate the upgrade of the proxy contract with the new implementation

[SeanJCasey]

@ernesto-usal I implemented the suggested contract changes and added the suggested mainnet fork test suite.

I also added a script to package.json for running the mainnet fork test suite.

I realized during this process that the current tests in test-fork/ don't work (unless I'm mistaken). I'm guessing that they were just cloned over from the staked aave repo. Anyways, I needed to bump the fork block to get incentives working and needed to change a type that didn't exist in this repo.

Also, I wasn't sure if I needed to preserve the use of DRE.ethers in this file, so I included it anyways.

[SeanJCasey]

Also, I kept the initialize() function, but just emptied it and removed the no-longer-necessary modifier. I assume this is what you wanted.

[eboadom]

@SeanJCasey actually the initializer modifier should remain, because if not, the state (on VersionedInitializable) concerning the versioning will not be modified, and could lead to inconsistencies on consequent updates

[miguelmtzinf]

I would change the name of the audit file to include the date.

[miguelmtzinf]

Lets add FORKING_BLOCK=12290275 for the previous tests to make them work.