Added Froggie* and IsoSubsample

src/PythonicAPI.md

src/PythonicAPI/GeometricObjects/EarthSource.py

src/PythonicAPI/ImageProcessing/IsoSubsample.md

src/PythonicAPI/ImageProcessing/IsoSubsample.py

src/PythonicAPI/Visualization/FroggieSurface.md

src/PythonicAPI/Visualization/FroggieSurface.py

src/PythonicAPI/Visualization/FroggieView.md

src/PythonicAPI/Visualization/FroggieView.py

...Baseline/PythonicAPI/ImageProcessing/TestIsoSubsample.png

...Baseline/PythonicAPI/Visualization/TestFroggieSurface.png

...ng/Baseline/PythonicAPI/Visualization/TestFroggieView.png