nodes: fix serialized ID typos with backward compatibility

- ChromaKey tolerance inputs are now spelled "upper/lower_tolerance_in";
  old projects with the misspelled "tolerence" IDs keep loading (values
  and connections) via a new Node::GetInputIDForLegacyID() hook applied
  in LoadInput and connection deserialization
- flip/ripple/swirl/tile/wave node IDs moved to the consistent
  org.olivevideoeditor.Olive.* domain; NodeFactory::CreateFromID maps
  the old org.oliveeditor.* IDs so old projects still resolve
- Regression tests: legacy ChromaKey IDs (values + connections) and
  legacy factory IDs

app/node/node.h

@@ -1094,6 +1094,14 @@ public:
 	bool LoadInput(QXmlStreamReader *reader, SerializedData *data);
 	void SaveInput(QXmlStreamWriter *writer, const QString &id) const;
 
+	/**
+	 * @brief Maps an input ID read from an old project file to its current ID
+	 *
+	 * Nodes whose input IDs have been renamed override this so old projects
+	 * keep loading. The default implementation returns the ID unchanged.
+	 */
+	virtual QString GetInputIDForLegacyID(const QString &id) const;
+
 	bool LoadImmediate(QXmlStreamReader *reader, const QString &input,
 					   int element, SerializedData *data);
 	void SaveImmediate(QXmlStreamWriter *writer, const QString &input,