The goal of this task is to create all custom elements to be rendered by Reactflow as defined by UX.

ReactFlow takes as input a graph object containing nodes and its relationships. This object also contains node and edge types used by ReactFlow internal factories to create and render the different types of nodes and edges and also keep custom data that can be used/displayed by/on the workflow.

At this point it should be possible to render a hardcoded graph object containing any type of node and edge required for the timelime. Note that the layout of the workflow is static at this point because autolayout is not implemented.