feat: sharpness (#1931)

* feat: sharpness

* feat: fill sharp lines, et al.

* fix: rotated positioning

* chore: simplify path with Q

* fix: hit test inside sharp elements

* make sharp / round buttons work properly

* fix tsc tests

* update snapshots

* update snapshots

* fix: sharp arrow creation error

* fix merge and test

* avoid type assertion

* remove duplicate helper

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

src/element/newElement.ts

@@ -46,6 +46,7 @@ const _newElementBase = <T extends ExcalidrawElement>(
     height = 0,
     angle = 0,
     groupIds = [],
+    strokeSharpness,
     boundElementIds = null,
     ...rest
   }: ElementConstructorOpts & Omit<Partial<ExcalidrawGenericElement>, "type">,
@@ -65,6 +66,7 @@ const _newElementBase = <T extends ExcalidrawElement>(
   roughness,
   opacity,
   groupIds,
+  strokeSharpness,
   seed: rest.seed ?? randomInteger(),
   version: rest.version || 1,
   versionNonce: rest.versionNonce ?? 0,