feat: introduce frames (#6123)

Co-authored-by: dwelle <luzar.david@gmail.com>

src/data/restore.ts

@@ -62,6 +62,7 @@ export const AllowedExcalidrawActiveTools: Record<
   freedraw: true,
   eraser: false,
   custom: true,
+  frame: true,
   hand: true,
 };
 
@@ -125,6 +126,7 @@ const restoreElementWithProperties = <
     height: element.height || 0,
     seed: element.seed ?? 1,
     groupIds: element.groupIds ?? [],
+    frameId: element.frameId ?? null,
     roundness: element.roundness
       ? element.roundness
       : element.strokeSharpness === "round"
@@ -272,6 +274,10 @@ const restoreElement = (
       return restoreElementWithProperties(element, {});
     case "diamond":
       return restoreElementWithProperties(element, {});
+    case "frame":
+      return restoreElementWithProperties(element, {
+        name: element.name ?? null,
+      });
 
     // Don't use default case so as to catch a missing an element type case.
     // We also don't want to throw, but instead return void so we filter