🪖 Moves humanFileSize to string utilities

app/src/lib/utilities/index.ts

@@ -0,0 +1,2 @@
+export * from './result'
+export * from './string-utilities'

app/src/lib/utilities/string-utilities.ts

@@ -0,0 +1,5 @@
+export const humanFileSize = (size:number):string => {
+    const units = ['B', 'kB', 'MB', 'GB', 'TB']
+    var i = size == 0 ? 0 : Math.floor(Math.log(size) / Math.log(1024));
+    return Number((size / Math.pow(1024, i)).toFixed(2)) * 1 + units[i];
+}