addOperation

add a WVOperation

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Discussion

Several things happen when adding an operation.

1. We check that dimensions exist for all output variables produced by this operation.
2. We see if there are any existing output variables with the same name. 2a. We remove the operation that produced the existing variables, if it exists.
3. We map each new variable to this operation variableAnnotationNameMap
4. Map each operation name to the operation

In our revision, - The variableAnnotationNameMap will map the name to the variable annotation - The operationVariableNameMap will map the name to the operation