docs: added plugins documentation (#10989)

(Should be merged after the next release)

Closes DX-1294

www/packages/docs-ui/src/components/WorkflowDiagram/List/index.tsx

@@ -8,6 +8,7 @@ import { WorkflowDiagramLegend } from "../Common/Legend"
 
 export const WorkflowDiagramList = ({
   workflow,
+  hideLegend = false,
 }: WorkflowDiagramCommonProps) => {
   const clusters = createNodeClusters(workflow.steps)
 
@@ -20,7 +21,7 @@ export const WorkflowDiagramList = ({
           <WorkflowDiagramListDepth cluster={cluster} next={next} key={depth} />
         )
       })}
-      <WorkflowDiagramLegend />
+      {!hideLegend && <WorkflowDiagramLegend />}
     </div>
   )
 }

www/packages/docs-ui/src/components/WorkflowDiagram/index.tsx

@@ -6,9 +6,13 @@ import { Loading } from "../.."
 import { WorkflowDiagramCanvas } from "./Canvas"
 import { WorkflowDiagramList } from "./List"
 
+export type WorkflowDiagramCommonOptionsProps = {
+  hideLegend?: boolean
+}
+
 export type WorkflowDiagramCommonProps = {
   workflow: Workflow
-}
+} & WorkflowDiagramCommonOptionsProps
 
 export type WorkflowDiagramType = "canvas" | "list"