perf: plugin load time

[antazoey]

What I did

before:

In [1]: %time import ape_etherscan
CPU times: user 987 ms, sys: 140 ms, total: 1.13 s
Wall time: 1.15 s

after:

In [1]: %time import ape_etherscan
CPU times: user 7.72 ms, sys: 3.29 ms, total: 11 ms
Wall time: 10.7 ms

How I did it

How to verify it

Checklist

• Passes all linting checks (pre-commit and CI jobs)
• New test cases have been added and are passing
• Documentation has been updated
• PR title follows Conventional Commit standard (will be automatically included in the changelog)