Added vuex module for setting if darkmode is supported in users browser

src/store.js

@@ -2,12 +2,14 @@ import Vue from 'vue'
 import Vuex from 'vuex'
 
 import torrentModule from './modules/torrentModule.js'
+import darkmodeModule from './modules/darkmodeModule.js'
 
 Vue.use(Vuex)
 
 const store = new Vuex.Store({
   modules: {
-    torrentModule
+    torrentModule,
+    darkmodeModule
   }
 })