Adding DoMINO example to Modulus (#709)

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Co-authored-by: Kaustubh Tangsali <71059996+ktangsali@users.noreply.github.com>
Co-authored-by: Kaustubh <ktangsali@nvidia.com>

examples/cfd/external_aerodynamics/domino/README.md

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+# DoMINO: Decomposable Multi-scale Iterative Neural Operator for External Aerodynamics
+
+DoMINO is a local, multi-scale, point-cloud based model architecture to model large-scale
+physics problems such as external aerodynamics. The DoMINO model architecture takes STL
+geometries as input and evaluates flow quantities such as pressure and
+wall shear stress on the surface of the car as well as velocity fields and pressure
+in the volume around it. The DoMINO architecture is designed to be a fast, accurate
+and scalable surrogate model for large-scale simulations.
+
+The DoMINO model architecture is used to support the Real Time Wind Tunnel OV Blueprint
+demo presented at Supercomputing' 24.
+
+![Results from DoMINO for RTWT SC demo](../../../../docs/img/domino_result_rtwt.jpg)
+
+More details on the model architecture and reference pipeline will be released soon.