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

node_modules/@jimp/plugin-normalize/index.d.ts

@@ -0,0 +1,7 @@
+import { ImageCallback } from "@jimp/core";
+
+interface Normalize {
+  normalize(cb?: ImageCallback<this>): this;
+}
+
+export default function (): Normalize;