Add hooks to lint conda recipes and pyproject.toml files

[vyasr]

Currently all of the non-dependency components of our package files are managed manually. This can lead to problems when some fields need to be specified in certain ways. It should be fairly trivial to implement a pre-commit hook that checks things like the license fields to ensure that they are appropriate. We could add as much complexity as we really need to handle various, although I'd probably err on the side of starting with only linting simple cases like common license typos and only adding more complex checks later if necessary.