Refactor

[newgnart]

Refactor following #13

• permission-scanner as a python project that can be installed with pip install -e . or via git
• move example run to example/run_scanner.py
• BlockExplorer object can be initiate by specifying chain_name and it will find the right base_url based on src/permission_scanner/utils/block_explorer_config.json

block_explorer = BlockExplorer(api_key, chain_name)

• Then ContractScanner can be initiated

contract_scanner = ContractScanner(
        rpc_url,
        block_explorer,
        export_dir=f"results/{project_name}",
)

• For simplicity, I removed the parse.py and used all default values

[newgnart]

@yvesbou
I think the PR is in a good shape. ContractScanner take chain name add address, scan then return results that is require for reports.
It can be fairly straight forward to scan local contracts.

[yvesbou]

can you please add .DS_Store to the .gitignore file @gnart33

[yvesbou]

and add also __pycache__/ to the gitignore @gnart33

[newgnart]

I also add some of common python gitignore