Changes in ProjectionComponent initialization

- Remove parsing function
  - Make ProjectionComponent accept sub-dictionary
Remove "Rotation" key-value from RenderableModelProjection
  - Information moved into RenderableFOV to do conversion between object and frame
Changes in mod files to reflect ProjectionComponent and RenderableModelProjection changes
Added Documentation to
  - RenderablePlanetProjection
  - RenderableModelProjection
  - ProjectionComponent
  - PlanetGeometry
  - ModelGeometry

modules/newhorizons/rendering/renderablefov.cpp

@@ -46,6 +46,7 @@ namespace {
     const std::string keyInstrumentMethod     = "Instrument.Method";
     const std::string keyInstrumentAberration = "Instrument.Aberration";
     const std::string keyPotentialTargets     = "PotentialTargets";
+    const std::string keyFrameConversions     = "FrameConversions";
 
     const int InterpolationSteps = 10;
     const int Stride = 8;
@@ -94,6 +95,17 @@ RenderableFov::RenderableFov(const ghoul::Dictionary& dictionary)
         _potentialTargets[i] = target;
     }
 
+    ghoul::Dictionary frameConversions;
+    success = dictionary.getValue(keyFrameConversions, frameConversions);
+    if (success) {
+        for (const std::string& key : frameConversions.keys()) {
+            openspace::SpiceManager::ref().addFrame(
+                key,
+                frameConversions.value<std::string>(key)
+            );
+        }
+    }
+
     addProperty(_lineWidth);
     addProperty(_drawSolid);
 }