- Fix workflow for PBD in SceneManager.cpp. Add/modify related functions for
PbdObject/PbdRigidObject/VirtualCoupleingPBDObject. It should work for the
most general case where collision/physics/visual meshes are different from
each other.
- Add LineMesh class and LineMeshRenderDelegate. Add support for LineMesh
class in imstkGeometry, imstkMesh, imstkRenderDelegate.

- Fix a bug for computeBoundingBox() in imstkMesh.
- Fix a bug for applying mapping in TetraTriangleMap.
- Fix a bug for computing the center of tetra in TetraTriangleMap.

	-Create PbdRigidObject class for objects that are not deformable but need
	to interact with deformable pbd objects.
	-Create VirtualCouplingPbdObject class, which is inherted from
	PbdRigidObject and TrackingController. The physics and colliding
	geometry(mesh) need to be translate/rotate manually to interact
	with deformable objects, which is different from existing
	VirtualCouplingObject class.

Enforces style and place holders for comments in the pbd related code files

Adds basic plot generator scripts for vectors for Matlab and Matlibplot

Style enforcement and add comments over the entire code

Adds updateFunction to the NL system. Some style cleanup.

Trigger compilation error on macOSx

Vega filename was hardcoded in DeformableBodyModel.

In VegaMeshReader, keep a pointer to the vega mesh
within the volumetricMesh class, and use it when
initialising the deformable body model.

InsertNextTypedTuple needs to return a value or
compilation error on windows.

After rebasing on dynamics-sprint, the following
errors appeared:
- change from VecNf to VectorF
- wrongfully placed 'virtual' in MassSpringForceModel
- wrongfully placed '#endif' in MassSpringForceModel
- missing include in NonLinearSolver
- error in constructor in NonLinearSystem
- error in Eigen include in TimeIntegrator
- error in VTK remote address in External_VTK.cmake

Move force models implementation to ccp files

Adjust camera position and plane scale

Adds solver, maps to scene manager pipeline.
Enables different types of state updates.
Improves the example.

Adds unknown vector to nonlinear system.
Adds simplified nonlinear solver for testing

Adds comments in scene class and format changes

Sets displacement to the mesh vertices as sum of original positions and the current displacements

Adds connection b/n vega and deformable model tangent stiffness matrics

Clears runtime error that shows failure to create eigen vectors in problemState.
Small formatting changws.

Clears linker errors in solvers and force model.
Adds comments in the time integrator classes.

Clears compilation and linker errors in solver and TI modules.
Moved the code in TI to cpp.

Clears compilation errors in force model. Implements getForceAndMatrix in force models.
Adds get type in dynamical model. Adds get and set dynamic model in dynamic object.
Removes raw pointers in nonLinearSystem class.

Adds penalty based mesh to rigid contact handling. Adds contact force vector to deformable body model

Removing vega executables form cmake since they are not libraries

Adds driver code to test deformable models.
Clears a bunch of compiler errors in force model module.

Add initialization of Stiffness, damping, mass matrices and vectors.
Add updates for Stiffness, damping, mass matrices and vectors.
Adds update body states given the solution vector.
Adds loading initial states
Builds effective stiffness matrix

Consistent style enforcement in nonLinearSolver class