add missing file

public/configStore.js

@@ -0,0 +1,51 @@
+const Store = require('electron-store');
+
+const defaults = {
+  defaults: {
+    captureFormat: 'jpeg',
+    customOutDir: undefined,
+    keyframeCut: true,
+    autoMerge: false,
+    timecodeShowFrames: false,
+    invertCutSegments: false,
+    autoExportExtraStreams: true,
+    askBeforeClose: false,
+    muted: false,
+    autoSaveProjectFile: true,
+    wheelSensitivity: 0.2,
+    language: undefined,
+  },
+};
+
+
+let store;
+
+async function init() {
+  for (let i = 0; i < 5; i += 1) {
+    try {
+      store = new Store(defaults);
+      return;
+    } catch (err) {
+      // eslint-disable-next-line no-await-in-loop
+      await new Promise(r => setTimeout(r, 2000));
+      console.error('Failed to create config store, retrying', err);
+    }
+  }
+
+  throw new Error('Timed out while creating config store');
+}
+
+function get(key) {
+  return store.get(key);
+}
+
+function set(key, val) {
+  if (val === undefined) store.delete(key);
+  else store.set(key, val);
+}
+
+module.exports = {
+  init,
+  get,
+  set,
+};