Simplified API for input/output helper functions

[jkirk5]

Summary

Removed the val argument from the helper functions add_aviary_input and add_aviary_output, which previously was always being reset to the metadata default regardless.

Claude Haiku 4.5 was used to change the use of inputs.values() to individual calls to get the values of individual inputs in gaspaero for significantly improved readability/traceability/search-ability of the code.

Related Issues

• Resolves Any custom defaults set in components are overwritten by metadata defaults #1196

Backwards incompatibilities

I stumbled upon opt2vals in the 2dof taxi and it appears to be redundant, so I removed it. That is the only place it is being used and seems like it can just be directly set as an input (via the input csv) rather than an option that then becomes an input.

New Dependencies

None

[Kenneth-T-Moore]

This component appears to be unused outside of its unit test, which is why it has dynamic inputs that aren't shaped by num_nodes. I think we can delete it and its test.

EDIT: We actually replaced the component with an excecomp, so yeah, it is redundant now.

EDIT: WE might need to bring the v_rotation component back, because gravity is going to become an option instead of a bare input. This overlaps with Eliot's story, and with mine too, since I need to move that component into the takeoff ode. Probably leave it there for now.

[Kenneth-T-Moore]

Mission.Taxi.MACH is still an option, and we don't do a set_val on options from the Aviary top, so I think you still need to get the value out of the metadata or options and set it as the default value for taxi_mach in the alias_comp definition below this. Otherwise, taxi mach is 0.0 as per the set_input_defaults at the bottom (which also should be removed.)