Adds full frame implementation to this node operations.
No functional changes.
Includes a new operation method `init_data` used to initialize any data
needed after operations are linked and resolutions determined.
Once tiled implementation is removed `initExecution` may be renamed
to `init_rendering` and `init_data` to `init_execution`.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D11944
