PerlinMap, ShipController updates

PerlinMap simplified to only include Mesh functionality. Updated
GetHeight() function to return smoother height updates and more
realistic buoyancy.

ShipController uses Input.GetAxis() instead of Input.GetKey() for easier
controller integration in the future.

Note: ShipController still has errors that need fixing.
Organized Files, Deleted Obsolete Scenes

Started working in "seb.unity" scene.
Added simple HUD
Ocean Looks Like Flat Plane in Scene Editor

Provides height reference point for building terrain to poke through the
ocean.
Added _Sounds and _Terrains folders
Slight Ocean Changes

Lower Pixel Scale, Time Scale, and Height Scale.