feat(zoom): Add offset to fitview-params

* Allow for offsetting fit view by x or y values

Signed-off-by: Braks <78412429+bcakmakoglu@users.noreply.github.com>

src/types/flow.ts

@@ -63,6 +63,10 @@ export type FitViewParams = {
   includeHiddenNodes?: boolean
   minZoom?: number
   maxZoom?: number
+  offset?: {
+    x?: number
+    y?: number
+  }
 }
 
 export type FlowExportObject<T = any> = {