Updating the version to v1.10.0

Dependency updates:

• Update gunicorn requirement >=22.0.0.
• Update black requirement >=24.3.0.

Replace temporary instrument calibrations w/ metadata-based process:

• Resolves issue #111 (closed).
• Replace static data in /geomagio/Metadata.py with function that pulls and converts data from metadata server.
• Add JSON state file reader/writer to Util.

Variometer API

• Change IRISFactory to FDSNFactory.
• Updated the validator in DataAPIQuery.py to accept Variometer IDs.
• Added variometers.py.
• Add router to app.py.