fix(config): Check for home folder during init

[ed-p-may]

Adds a check to config.py | Folders._find_default_ladybug_tools_folder() method to ensure that if the 'ladybug_tools' folder already exists on the user's computer, we don't try and create it again (which would raise an OS Error / WinError 183)

• See discussion here link for background on the issue.

• All existing tests pass, but I did know how to add new tests for this without editing folders on the user's computer, which did not seem like the right path?

[github-actions[bot]]

:tada: This PR is included in version 0.41.20 :tada:

The release is available on:

• GitHub release
• v0.41.20

Your semantic-release bot :package::rocket: