feat: add util functions

packages/core/src/util.ts

@@ -0,0 +1,16 @@
+import sharp from "sharp";
+
+export function loadImageFromDisk(path: string) {
+    return sharp(path)
+}
+
+export function loadImageFromBuffer(buf: Buffer) {
+    return sharp(buf)
+}
+
+/**
+ * This function calculates the cartesian product of two or more array and is straight from stackoverflow ;)
+ * Should be replaced with something more legible but works for now.
+ * @internal
+ */
+ export const cartesian = (...a: any[]) => a.reduce((a: any, b: any) => a.flatMap((d: any) => b.map((e: any) => [d, e].flat())))