Define routes for API endpoints

[AndreaM2429]

Hello @Dachrono! 🙋🏽‍♀️ I'm sending this PR because I implemented a new feature that requires your review.

🎯 Milestones:

• Define the routes for all the API endpoints according to the:
  • Users
    • show and create
  • Reservations
    • index, create and destroy
  • Experiences
    • In this case, the experiences aren't nested routes because they don't depend on any user.
    • index and show.

Extra implementations

• Create the create missing action in the Reservations controller.
• Solve misspelling issues on the Reservation model.

🏁 General requirements 🏁:

❇️ Gitflow ❇️ No linter errors ❇️ Follow best practices

☆.｡.:･ﾟ☆.｡.:･ﾟ☆.｡.:･ﾟ☆.｡.:･ﾟ☆.｡.:･ﾟ☆.｡.:･ﾟ☆.｡.:･ﾟ☆.｡.:･ﾟ☆.｡.:･ﾟ☆.｡.:･ﾟ☆.｡.:･ﾟ☆.｡.:･ﾟ☆.｡.:･ﾟ☆

🙇‍♀️🙇‍♀️Thanks in advance Andrés for taking the time and all your effort to review these new implementations. If any change is required or you can see any improvements in the code please let me know it.