Changed the date format passed to api.get_body_composition from a datetime object to a string in 'YYYY-MM-DD' format to match API requirements. Also updated .gitignore to exclude .garminconnect files.
[aux] added auxiliary scripts
[backend] added error logic to error printing
[backend] rollbacked changes from Datetime to Timestamp
[backend] added body composition sync from Garmin
[backend] added additional validations for empty .gpx files
[backend] add calculate BMI logic
[backend] add BMI calculation in migration
[backend] added Timezone logic to Strava activity import
[frontend] removed block that prevent deleting Strava or GC activity
[frontend] added new generic modal for single number input
[frontend] replaced modal that retrieves Strava and GC activities for number of days with new generic modal
[frontend] added shoes gear in add gear to walk and hike activities
[frontend] minor bug fixes
