scripts: replace hardcoded variables with import from global vars

[heyJonBray]

Task to be completed

store hardcoded address variables in a global OnchainData.sol file and pull from them as needed

Scope of work

script files rely on hardcoded onchain data and is chain dependent. instead of managing hardcoded vars in each file, which often overlap, create a global contract, for example /utils/OnchainData.sol that can be imported where these variables are needed

Additional context

example of what I'd like to avoid when possible:

[heyJonBray]

WIP