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.test.ts

@@ -31,6 +31,7 @@ it("clones arrow element", () => {
     fillStyle: "hachure",
     strokeWidth: 1,
     strokeStyle: "solid",
+    strokeSharpness: "round",
     roughness: 1,
     opacity: 100,
   });
@@ -75,6 +76,7 @@ it("clones text element", () => {
     fillStyle: "hachure",
     strokeWidth: 1,
     strokeStyle: "solid",
+    strokeSharpness: "round",
     roughness: 1,
     opacity: 100,
     text: "hello",