Feature/ia ticket21 flights basic

[ialej001]

Added complete end-to-end flight calculator:

• Added flight calculator to travel page inside a tabbed component.
• Added 4 child components that render each section of the flight calculator UI into the components folder under 'Flight'.
• Added as much client side validation to minimize the amount of potential CarbonAPI server side errors.
• Set up flight schemas and types
• Set up tRPC router endpoint for unregistered users and merged into the tRPC controller

Note: To whomever takes up the driving ticket: replace my flight component with your parent component in the driving tab in the travel page.

Closes #21, #44

[amandaalexandre]

Thanks so much! I'll take a look at it!