File structure update - all source files now in src directory, cider-ui renamed to renderer, main/backend-related files in main directory, base implementation of mpris and start of backend rework

src/preload/cider-preload.js

@@ -0,0 +1,8 @@
+const electron = require('electron')
+
+console.log('Loaded Preload')
+
+process.once('loaded', () => {
+    console.log("Setting ipcRenderer")
+    global.ipcRenderer = electron.ipcRenderer;
+});