Add a customizable weight formatter function

module/utils/formatWeight.mjs

@@ -0,0 +1,12 @@
+import { __ID__ } from "../consts.mjs";
+import { toPrecision } from "./roundToPrecision.mjs";
+
+/**
+ * Formats a numerical value as a weight.
+ *
+ * @param {number} weight The numerical weight to format
+ */
+export function formatWeight(weight) {
+	const unit = game.settings.get(__ID__, `weightUnit`);
+	return toPrecision(weight, 2) + unit;
+};