Build on GH Actions. Set up nightly.

Signed-off-by: Akos Kitta <kittaakos@typefox.io>

electron/build/scripts/notarize.js

@@ -0,0 +1,24 @@
+const isCI = require('is-ci');
+const { notarize } = require('electron-notarize');
+
+exports.default = async function notarizing(context) {
+    if (!isCI) {
+        console.log('Skipping notarization: not on CI.');
+        return;
+    }
+    const { electronPlatformName, appOutDir } = context;
+    if (electronPlatformName !== 'darwin') {
+        return;
+    }
+
+    const appName = context.packager.appInfo.productFilename;
+    const appBundleId = context.packager.config.appId;
+    console.log(`>>> Notarizing ${appBundleId} at ${appOutDir}/${appName}.app...`);
+
+    return await notarize({
+        appBundleId,
+        appPath: `${appOutDir}/${appName}.app`,
+        appleId: process.env.AC_USERNAME,
+        appleIdPassword: process.env.AC_PASSWORD,
+    });
+};