Adding Examples for the IncNS solver

Issue/feature addressed

Updates from the December Hackathon: Worked with Spencer to update the examples section in the IncNS solver

Proposed solution

Updates from the Hackathon: Added Examples to the solvers/IncNavierStokesSolver/Examples, Updated User-guide for examples

Implementation

Added the following to solvers/IncNavierStokesSolver/Examples:

1. ChannelFlow2D
2. ChannelFlow3D
3. ChannelFlowQuasi3D
4. ChannelStability
5. ChannelStabilityAdjoint
6. KovasznayFlow2D
7. BackwardFacingStep_TG

The user guide examples section has one extra example, KovasznayFlow2D with HOBC for which the folder has not been added yet.

The folder solvers/IncNavierStokesSolver/Examples has the files soft linked from the solvers/IncNavierStokesSolver/Tests folder

Tests

All tests running fine, user-guide-pdf compiling.

Suggested reviewers

@mlahooti @ccantwel @ssherw

Notes

Please add any other information that could be useful for reviewers.

Checklist

• Functions and classes, or changes to them, are documented.
• User guide/documentation is updated.
• Changelog is updated.
• Suitable tests added for new functionality.
• Contributed code is correctly formatted. (See the contributing guidelines).
• License added to any new files.
• No extraneous files have been added (e.g. compiler output or test data files).