add validation handler and deps

[nickmasson]

Changes

Features

Adds a ValidateTrajectoryHandler to pycontrails.datalib.spire.

The handler takes a pandas dataframe, where each row represents a single flight instance trajectory waypoint.

Certain columns are required (ValidateTrajectoryHandler.SCHEMA) beyond what is required in e.g. a Flight instance (pycontrails.core.flight), as those additional columns are used in the validation ruleset that evaluates the trajectory.

TODO

• [ ] mypy wrestling
• [ ] update changelog
• [ ] update release notes
• [ ] add tutorial/cheat-sheet (proposed location: https://py.contrails.org/flight.html)
• [ ] (?) additional consolidation and structuring of existing methods in spire.py (could also be a follow-up release, as those changes will be backward incompatible)

Tests

• [ ] QC test passes locally (make test)
• [ ] CI tests pass