Adds the tool class to the cornerstoneTools to be used later. This function
should be called before creating the toolGroups and adding tools and setting their mode.
The flow is:
addTool(ToolClass) // where ToolClass is the tool constructor imported from CornerstoneTools or created by a 3rd party
createToolGroup(toolGroupId)
toolGroup.addTool(${toolName}) // NOT THE TOOL CLASS
Adds the tool class to the cornerstoneTools to be used later. This function should be called before creating the toolGroups and adding tools and setting their mode. The flow is: