Create Cache class for exact, fuzzy, and semantic deduplication

[sarahyurick]

TODO:

• Exact deduplication files
• Semantic deduplication files
• Fuzzy deduplication files
• Tutorials folder

[Maghoumi]

Thanks so much for working on this change. What I like about this now is that it gives users the option to either use the same cache directory for anything that requires caching, or provide a specific directory if they don't want to re-use the same cache.

The cache class implementation is functional but not thread-safe. I don't think that's a blocking problem for this PR.

I didn't run the samples/tutorials, but I assume the change has been thoroughly verified?

[sarahyurick]

Thanks so much for working on this change. What I like about this now is that it gives users the option to either use the same cache directory for anything that requires caching, or provide a specific directory if they don't want to re-use the same cache.

The cache class implementation is functional but not thread-safe. I don't think that's a blocking problem for this PR.

I didn't run the samples/tutorials, but I assume the change has been thoroughly verified?

Thanks! Yes, I tried to make as few breaking changes as possible. The examples and tutorials should all reflect those changes.