visualiser: Create custom branching name to avoid collision

[andrewwormald]

Currently for any branching that takes place the branching name in the md file is if_state which means that if there is more than one branching in the workflow the visualiser will incorrectly connect the branching due to referencing if_state. Instead using the from value and adding a suffix of _branching allows the output to be 1_branching which indicates from node 1 branching to node 2 and is represented like such:

    state 1_branching <<choice>>
    1 --> 1_branching
    1_branching --> 2
    1_branching --> 3 

stateDiagram-v2
	direction LR
	
	1: Start
	2: Middle
	3: End
	
    state 1_branching <<choice>>
    1 --> 1_branching
    1_branching --> 2
    1_branching --> 3 

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[sonarcloud]

Quality Gate passed

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0 New issues
0 Accepted issues

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0.0% Coverage on New Code
0.0% Duplication on New Code

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