chore: add jimp dependency, icon padding script, and update configuration

node_modules/@jimp/plugin-threshold/test/threshold.test.js

@@ -0,0 +1,30 @@
+import { Jimp, getTestDir } from "@jimp/test-utils";
+import configure from "@jimp/custom";
+import jpeg from "@jimp/jpeg";
+import color from "@jimp/plugin-color";
+import resize from "@jimp/plugin-resize";
+import expect from "@storybook/expect";
+
+import threshold from "../src";
+
+const jimp = configure(
+  { types: [jpeg], plugins: [threshold, color, resize] },
+  Jimp
+);
+
+describe("Threshold", function () {
+  this.timeout(15000);
+
+  it("defines default threshold for lighter backgrounds", async () => {
+    const expectedImage = await jimp.read(
+      getTestDir(__dirname) + "/images/hands_mx200_rp255.jpg"
+    );
+    const testImage = await jimp.read(
+      getTestDir(__dirname) + "/images/hands.jpg"
+    );
+
+    expect(testImage.threshold({ max: 200, replace: 255 }).hash()).toBe(
+      expectedImage.hash()
+    );
+  });
+});