Gui: Use getObject<T>() helpers in classes

This commit is generated using regex based find and replace:

```
s/[\w:]+_cast\s*<([^>]+)\*>\s*\(\s*getObject\(\s*\)\)/getObject<$1>/
s/[\w:]+_cast\s*<([^>]+)\*>\s*\(\s*([^)]*)\s*->\s*getObject\(\s*\)\)/$2->getObject<$1>()/
```

To regenerate if needed.

src/Mod/PartDesign/Gui/TaskDraftParameters.cpp

@@ -58,7 +58,7 @@ TaskDraftParameters::TaskDraftParameters(ViewProviderDressUp* DressUpView, QWidg
 
     this->groupLayout()->addWidget(proxy);
 
-    PartDesign::Draft* pcDraft = static_cast<PartDesign::Draft*>(DressUpView->getObject());
+    PartDesign::Draft* pcDraft = DressUpView->getObject<PartDesign::Draft>();
     double a = pcDraft->Angle.getValue();
 
     ui->draftAngle->setMinimum(pcDraft->Angle.getMinimum());