CFG and Standards package improvements - Introducing Providers

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Following PR is a update from #140 that will allow for Sniffy to be introduced later on.

It resolves:

• StorageAt() preparation so we can basically lookup any contract values with ordered state variables
• CFG improvements, lots of it
• Providers package (basic bitquery and etherscan/bscscan) support. Targeting only functionality necessary for contract retrieval or contract block retrieval.
• Standards improvements. Might break things if someone is using it as there are no longer EIPs but rather ERC.
• IR updates, now you can walk recursively through the whole IR including many other things.

Need to document properly (outside of code) functionalities. Do not have time for it now. I did wrote code doc so you can read through it and as well, there are tests.