Demo Mode (#117)

* Adding Demo Mode to Fredy

lib/utils.js

@@ -4,6 +4,10 @@ import {readFile} from 'fs/promises';
 import {createHash} from 'crypto';
 import {DEFAULT_CONFIG} from './defaultConfig.js';
 
+function inDevMode(){
+    return process.env.NODE_ENV == null || process.env.NODE_ENV !== 'production';
+}
+
 function isOneOf(word, arr) {
     if (arr == null || arr.length === 0) {
         return false;
@@ -72,6 +76,7 @@ export async function refreshConfig(){
 await refreshConfig();
 
 export {isOneOf};
+export {inDevMode};
 export {nullOrEmpty};
 export {duringWorkingHoursOrNotSet};
 export {getDirName};