Bump to Postgres 18 in tests and prevent container leaks (#207)

Upgrade the test postgres container from 17-alpine to 18-alpine
to match what we use in the Docker image.

Also, use with_postgres.sh in change_processing.py, since we would
otherwise sometimes leak a Docker container when a test fails.

Assisted-by: Claude

Add --url and --api-auth-token options to `lnt create` (#195)

Replace --hostname/--hostsuffix with a single --url option that sets
zorgURL directly, and add --api-auth-token to write the API token into
the generated config. This eliminates the need for callers to manually
append settings to lnt.cfg after creation.

Also simplify the generated WSGI template to not suggest that it should
be run manually, which is incorrect (use `lnt runserver` instead).

Fixes #180

Add a way to pass additional machine information in lnt importreport (#…

…172)

Add a command to delete a test suite from a server (#162)

This will make administration of LNT instances much simpler.

[importreport] Allow specifying additional run information to include…

… in the submission (#151)

Fixes #150

Display additional run information on data points on charts (#148)

This allows arbitrary run information to be displayed on the charts
when clicking the data point. The content of the run information is
controled by the submitter of that run, which allows a great deal of
flexibility.

Folks will want to avoid attaching too much information to the runs
to avoid making graphs too slow, but that's on them.

Fixes #75

Version 0.4.5 with fixed behavior with Click 8.3.x

Version 0.4.4 with CI/CD setup

Version 0.4.3 with Python >= 3.10 support