Adding Topology optimization example

[dipinknair]

• Example requires (Mechanical by default) at least 4 core where GitHub runner had only 2.
• Adding simple cantilever structural optimization to demonstrate pymechanical capabilities.

Topology optimized result

[vnamdeo]

Overall looks good.

[vnamdeo]

• Example requires (Mechanical by default) at least 4 core where GitHub runner had only 2.
• Adding simple cantilever structural optimization to demonstrate pymechanical capabilities.

@dipinknair : Could you please check the topo results as it looks more symmetric in terms of mass removal. Near the support condition, not expecting much mass removal. Anyway, will discuss more on this. Thanks for adding this example.

[PipKat]

@klmcadams My editorial review consisted mostly of changing inital capital letters to lowercase letters.

[vnamdeo]

Looks good.