BIM: adjust size of wellcome window to fit content

The actual optimal size of the window depends on many details, like UI style, system fonts,
OS etc ... so lets auto-resize the window to fit the content before display.

src/Mod/BIM/bimcommands/BimWelcome.py

@@ -53,6 +53,8 @@ class BIM_Welcome:
         self.form.label_4.linkActivated.connect(self.handleLink)
         self.form.label_7.linkActivated.connect(self.handleLink)
 
+        self.form.adjustSize()
+
         # center the dialog over FreeCAD window
         mw = FreeCADGui.getMainWindow()
         self.form.move(