feat: create ConfigCollection from non-git path

[mikewilli]

• Adds a from_local_path function to ConfigCollection
• bumps version to 2024.11.1

Why? Experimenter wants to use metric-config-parser to parse a partial local copy of metric-hub for outcomes and segments, and the existing from_local_repo required some mock objects in order for the local copy to work as a git repo (Experimenter always wants the latest version, so has no need for the .git dir that is used to get configs from a specific date, and .git is kind of big!).

Related: mozilla/experimenter#11772

[RJAK11]

That looks good to me!

[scholtzan]

I guess this should be fine. One thing to consider though is that some class methods, like as_of() won't work as they rely on a repository being present. Maybe we need to add some better error handling for those, but I guess experimenter won't look at the commit history

[mikewilli]

@scholtzan Thanks for raising this valid concern. I updated the PR to create a new sub-class of ConfigCollection that explicitly raises an exception if the class methods that use repos are called, and then moved the from_local_path function into this class.

Of note, I think it sort of makes more sense the other way around, as ConfigCollection adds repos to the LocalConfigCollection, but I implemented it this way to avoid making changes in ConfigCollection (just in case).