Updates for changes to opendrift and more

[kthyng]

• updated to using version of opendrift in which you can input an xarray Dataset directly
• added new parameter for built-in ocean_models to specify whether to look locally or remote for the output (ocean_model_local)
• added local model output information for known models using parquet files for kerchunk access to model output
• changed max_speed parameter, which controls buffer size in opendrift, to 2 from 5.
• improved handling of "steps", "duration", and "end_time" parameters.
• improved reader interaction and speed with opendrift by dropping unnecessary variables from ocean_model Dataset, separating out the standard_name mapping input to the ROMS reader in opendrift, added option for whether or not to use wet/dry masks in ocean_model output if available