1-d MUSCL Solver for the Shallow Water Equations

Solves the one-dimensional shallow water equations (SWE) for any initial condition, such as a dam break scenario, using a second-order MUSCL-LF, MUSCL-Rusanov and MUSCL-HLL implementations. This snippet includes an exact solver for Riemann problems of the SWE.
As always, I intend this snippet to be readable and easy to study, especially for beginners in the CFD community.

Note that the example with topography is not completed yet. I'll come back later to update this example.

Happy coding! ;D