✨ Add gridstack dashboard layout

src/tools/bytesHelper.ts

@@ -0,0 +1,26 @@
+export const bytes = {
+  toPerSecondString: (bytes?: number) => {
+    if (!bytes) return '-';
+    for (let i = 0; i < 4; i++) {
+      if (bytes >= 1000 && i !== 3) {
+        bytes /= 1000;
+        continue;
+      }
+
+      return `${bytes.toFixed(1)} ${perSecondUnits[i]}`;
+    }
+  },
+  toString: (bytes: number) => {
+    for (let i = 0; i < 4; i++) {
+      if (bytes >= 1024 && i !== 3) {
+        bytes /= 1024;
+        continue;
+      }
+
+      return `${bytes.toFixed(1)} ${units[i]}`;
+    }
+  },
+};
+
+const perSecondUnits = ['b/s', 'Kb/s', 'Mb/s', 'Gb/s'];
+const units = ['B', 'KiB', 'MiB', 'GiB'];