Habiter

Features
- list: Remove `--verbose` in favor of `--less`

Fixes
- api: Give export API the ability to find habit data again

Other
- build: Replace the unmaintained direct dependency `appdirs` with `platformdirs`

Features
- Allow an optional way to view certain habits for the list subcommand by passing the habit names as arguments

Fixes
- Make sure to update "last_updated" database column given the -z/--zero flag for the tally subcommand

Features
* Replace json-driven data storage for ***SQL*** database management using ***sqlite3***
* Exit with an error when given unexpected command line inputs
* Allow supplying of a "--yes" option for warning prompts

Fixes
* Fix tally command where supplying the -z/--zero option on a habit with no occurrences would still update its tally
* Exclude the "test" package from the build

* Update project structure by defining a boundary between implementation details and public API
* Replace argparse implementation with a click implementation