ENH: Add pressure thrust

[caioessouza]

Is your feature request related to a problem? Please describe.

Rocketpy curetly does not take into account the thrust dependece on the ambient pressure: $(p_e-p_a)A_e$.

It's a important behaviour considering two situations: correction for thrust curves obtained from a static hot fire test performed in a altitude much different from the launch or in-flight corrections for high target altitude flights.

Describe the solution you'd like

Implement a optional method for take that behaviour into acount without crashing the current library behaviour.

Additional context

To do list

• Review theory
• Check which parameter to add to the init of all motor classes
• Implemet a function to split the input thrust curve in mass flow thrust and pressure thrust
• Impelement the thrust correction in the flight simulation

[caioessouza]

Based on #148

[kevin-alcaniz]

At Faraday, we've made some changes to account for pressure thrust and correct the thrust force as the rocket ascends. Would you like me to open a PR?

[caioessouza]

At Faraday, we've made some changes to account for pressure thrust and correct the thrust force as the rocket ascends. Would you like me to open a PR?

Sure, I just saw what you made at the issue #789 and it seems very good. Feel free to open the PR, thank you for the contribuition!