feat: Add dedicated default loading component

* add option to pass a transition name

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

src/types/types.ts

@@ -78,6 +78,20 @@ export type FitViewFunc = (fitViewOptions?: FitViewParams) => void
 export type ProjectFunc = (position: XYPosition) => XYPosition
 export type ToObjectFunc<T = any> = () => FlowExportObject<T>
 
+export type Loading =
+  | {
+      label: string
+      transition?:
+        | string
+        | {
+            name: string
+            mode: string
+          }
+      style: CSSProperties
+      class: string
+    }
+  | boolean
+
 export type FlowInstance<T = any> = {
   zoomIn: () => void
   zoomOut: () => void
@@ -126,5 +140,5 @@ export interface FlowOptions {
   zoomOnDoubleClick?: boolean
   edgeUpdaterRadius?: number
   storageKey?: string
-  showLoadingIndicator?: boolean
+  loading?: Loading
 }