fix: add other plotters to visualisation

Author: lachlangrose

LoopStructural/visualisation/__init__.py

@@ -1 +1,11 @@
-from loopstructuralvisualisation import Loop3DView
+try:
+    from loopstructuralvisualisation import (
+        Loop3DView,
+        RotationAnglePlotter,
+        Loop2DView,
+        StratigraphicColumnView,
+    )
+except ImportError as e:
+    print("Please install the loopstructuralvisualisation package")
+    print("pip install loopstructuralvisualisation")
+    raise e