Importing processes too many files

[ricardog]

Describe the bug

Yesterday I ran garmindb_cli.py --all --download --import --latest. When I ran it again today (one day later) I see the following output

Processing sleep data
100%|██████████████████████████████████████████████████████████████████████████████████████| 3/3 [00:00<00:00, 22.78files/s]
Processing rhr data
100%|██████████████████████████████████████████████████████████████████████████████| 1634/1634 [00:00<00:00, 2082.99files/s]
Processing activities tcx data
100%|██████████████████████████████████████████████████████████████████████████████████| 443/443 [00:44<00:00,  9.95files/s]
Processing latest activities summary data from /Users/me/HealthData/FitFiles/Activities
100%|███████████████████████████████████████████████████████████████████████████████| 1767/1767 [00:02<00:00, 691.66files/s]
Processing activities detail data
100%|███████████████████████████████████████████████████████████████████████████████| 1767/1767 [00:02<00:00, 691.14files/s]
Processing [<FileType.activity: 4>] FIT data from /Users/me/HealthData/FitFiles/Activities
100%|████████████████████████████████████████████████████████████████████████████████| 1324/1324 [12:17<00:00,  1.80files/s]

I wouldn't expect the script to reprocess so many activity files (which takes a bit of time).

To Reproduce
Run garmindb_cli.py --all --download --import --latest in consecutive days (or even just back-to-back).

Expected behavior
I would expect only the "latest" files to be processed.

Additional context
I think this is due to the "latest" logic in idbutils.file_processor.py

    @classmethod
    def dir_to_files(cls, input_dir, file_regex, latest=False, recursive=False):
        """Search a directory, possibly recursively, and return a list of all files matching a regex."""
        file_names = []
        latest_threshold = datetime.datetime.now() - datetime.timedelta(days=1)

Which looks for files created in the last day. If I did the first import yesterday, for 24 hours the script will continue to process too many files.