Add zoom control panel to workflow canvas.

[christad92]

EPIC: #2021 We need to implement a zoom control panel that would allow users to lock, zoom out and zoom in when using the canvas. With this we should set the minimum zoom level to 6.

React flow offers a the useStore() that allow us to manipulate zoom controls via UI.

Might be useful:

• https://reactflow.dev/examples/interaction/contextual-zoom
• https://reactflow.dev/api-reference/hooks/use-store