feat(editor): LaserPointer based freedraw (#11507)

Introduces constant width freedraw mode, keeping the original variable mode as default.

---------

Signed-off-by: Mark Tolmacs <mark@lazycat.hu>
Co-authored-by: dwelle <5153846+dwelle@users.noreply.github.com>

packages/element/src/newElement.ts

@@ -4,6 +4,7 @@ import {
   DEFAULT_FONT_SIZE,
   DEFAULT_TEXT_ALIGN,
   DEFAULT_VERTICAL_ALIGN,
+  DEFAULT_STROKE_STREAMLINE,
   VERTICAL_ALIGN,
   randomInteger,
   randomId,
@@ -444,6 +445,7 @@ export const newFreeDrawElement = (
     type: "freedraw";
     points?: ExcalidrawFreeDrawElement["points"];
     simulatePressure: boolean;
+    strokeOptions?: ExcalidrawFreeDrawElement["strokeOptions"];
     pressures?: ExcalidrawFreeDrawElement["pressures"];
   } & ElementConstructorOpts,
 ): NonDeleted<ExcalidrawFreeDrawElement> => {
@@ -452,6 +454,10 @@ export const newFreeDrawElement = (
     points: opts.points || [],
     pressures: opts.pressures || [],
     simulatePressure: opts.simulatePressure,
+    strokeOptions: opts.strokeOptions ?? {
+      variability: "variable",
+      streamline: DEFAULT_STROKE_STREAMLINE,
+    },
   };
 };