Initial JSBSimWrapper, ISA and airspeed blocks

[seanmcleod70]

No description provided.

[bcoconni]

I guess a dependency to JSBSim ("jsbsim>=1.2.4") should be added to pyproject.toml:

pathsim-flight/pyproject.toml

Lines 28 to 32 in 12dcba2

	dependencies = [
	"pathsim",
	"numpy>=1.15",
	"scipy>=1.2",
	]

[seanmcleod70]

Thanks, just pushed a commit to add jsbsim as a dependency.

[milanofthe]

Awesome @seanmcleod70!

A frew remarks:

• Can you please put the helper classes and functions into a /utils dir, and add an __init__.py module that exposes the pathsim blocks at the package level?
• It also makes sense to have a _constants.py module for all the constants that are used.
• Also filenames are snake case in pathsim generally, so it makes sense to keep that convention here.

[seanmcleod70]

Pushed a new commit to move the code into functional subdirectories, added relevant __init__.py files and changed filenames to match snake case pattern.

The only constants at the moment are specific to the International Standard Atmosphere, so I've left them as class variables of ISAtmosphere.