Support CSV graphs and improve the look and feel (#2495)

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

src/element/newElement.ts

@@ -217,11 +217,12 @@ export const newLinearElement = (
     type: ExcalidrawLinearElement["type"];
     startArrowhead: Arrowhead | null;
     endArrowhead: Arrowhead | null;
+    points?: ExcalidrawLinearElement["points"];
   } & ElementConstructorOpts,
 ): NonDeleted<ExcalidrawLinearElement> => {
   return {
     ..._newElementBase<ExcalidrawLinearElement>(opts.type, opts),
-    points: [],
+    points: opts.points || [],
     lastCommittedPoint: null,
     startBinding: null,
     endBinding: null,