Issue 1676 fix verification of same name files

[vsmelov]

What I did

every filename inside get_verification_info and payload_verification has it's own unique subpath (even in case if there are several files with the same name)

Related issue: #1676

How I did it

created classmethod path_to_name and used it everywhere instead of Path(filepath).name

How to verify it

1. clone https://github.com/vsmelov/brownie_fail_verification
2. checkout branch "check-fix"
3. remove venv and create empty venv and do pip install -r requirements (there is a new brownie version inside requirements)
4. try to run brownie run scripts/deploy_and_verify_fail.py --network polygon-main IT WORKS!

Checklist

• I have confirmed that my PR passes all linting checks
• I have included test cases
• I have updated the documentation
• I have added an entry to the changelog

[zgfzgf]

Running 'deploy.py::main'...
File "brownie/_cli/run.py", line 51, in main
return_value, frame = run(
File "brownie/project/scripts.py", line 110, in run
return_value = f_locals[method_name](*args, **kwargs)
File "./deploy.py", line 5, in main
publish()
File "./deploy.py", line 58, in publish
Treasury.publish_source(treasury)
File "brownie/network/contract.py", line 363, in publish_source
contract_info = self.get_verification_info()
File "brownie/network/contract.py", line 320, in get_verification_info
self._flattener = Flattener(source_fp, self._name, remaps, compiler_settings)
File "brownie/project/flattener.py", line 30, in init
self.traverse(primary_source_fp)
File "brownie/project/flattener.py", line 72, in traverse
self.sources[name] = IMPORT_PATTERN.sub(repl, source)
File "brownie/project/flattener.py", line 69, in
+ f'"{self.path_to_name(sanitize(m.group("path")))}"'
File "brownie/project/flattener.py", line 42, in path_to_name
return "contracts/" + pth.split("/contracts/")[1]

[zgfzgf]

• "@solady=vectorized/solady@0.0.167"

[zgfzgf]

@vsmelov

[zgfzgf]

@iamdefinitelyahuman

[zgfzgf]

The old version is correct, there was an error after upgrading