Add simulation options

Add the options available in the MATLAB version of FluEgg up to Asian carp egg drift simulations.

The options include:

• Bottom boundary
  • Rough
  • Smooth
• Vertical turbulent diffusivity
  • Constant
  • Parabolic
  • Parabolic-constant
• Egg types
  • Silver
  • Bighead
  • Grass
• Constant density and diameter particle