0032289: Visualization - add NCollection_Mat3 for 3x3 matrix similar to NCollection_Mat4

0032289: Visualization - add NCollection_Mat3 for 3x3 matrix similar to NCollection_Mat4

Introduced NCollection_Mat3 class similar to NCollection_Mat4.
Added NCollection_Mat4::operator() alias to NCollection_Mat4::Value().
Added NCollection_Mat4::Negated(), ::Subtracted(), ::Added(), ::Divided() operations.
Added a note to NCollection_Mat4::GetData() that matrix values are stored in column-major order.
Removed duplicated operator== operators from NCollection_Mat4/NCollection_Vec4/NCollection_Vec3/NCollection_Vec2 classes.

Removed obsolete and no more used matrix state fields from OpenGl_Workspace.
Removed obsoiete structure OpenGl_Matrix (replaced by OpenGl_Mat4).
OpenGl_ShaderProgram - duplicated methods have been replaced by templates.