private int askToAssociateDataTypes() {
		return OptionDialog.showYesNoCancelDialog(gTree, "Associate Data Types?",
			"Do you want to associate local data types with the target archive?");
	}
Returns true if the given data type's source archive is the same as it's current data
type manager.  This is false if copying a new type from the program to an
external archive.

@param dt the type
@return true if the given type already lives in its source archive
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/datamgr/util/DataTypeTreeCopyMoveTask.java