[FEATURE] Conversion from .tar/ individual HiTrack_ file results in a .tcx filename with unix timestamp datetime instead of human readable

[dany123]

Is your feature request related to a problem? Please describe.
When converting a single file named "HiTrack_1594228021000159422864000030001" the output file is named "HiTrack_1594228021000159422864000030001.tcx" which is pretty ugly to read.
I can use a format of --output_file_prefix "%Y-%m-%d %H-%M-%S " to get an output of "2020-07-08 17-07-02 HiTrack_1594228021000159422864000030001.tcx" but this is way too long and still ugly.

The .zip from huawei data is nicely converted to files with format "HiTrack_20200708_200701_001.tcx" which is very readable, and sorts nicely in explorers (also converted to correct timezone, nice touch there!).

Describe the solution you'd like
My request is to treat HiTrack files the same as .json type for output, so something like this:
HiTrack_"timestamp_start""timestamp_end" --> HiTrack_YYYYMMDD_HHMMSS.tcx

Note: same request for .tar processing.

Additional context
For context: I requested my data from huawei a few weeks ago and succesfully used Hitrava on that .zip to get the activities. Today I wanted to re-redownload the latest data but they have a timeout period in which you can't re-request your data again so I used an android emulator, rooted it, installed huawei health in it and got my data this way after syncing to cloud. The result wasn't as nicely as a few weeks back and I think this change would be very quick and useful.

Thanks,
Daniel

[CTHRU]

Good suggestion, and I like your creative way to get to the files.

I will add the functionality in the next release (expect it somewhere in the next week)

[dany123]

Thank you!