fix: location of possible drop-in folder for VSIX

Closes #1851

Signed-off-by: Akos Kitta <a.kitta@arduino.cc>

electron/build/scripts/arduino-ide-electron-main.js

@@ -1,9 +1,15 @@
 const os = require('os');
 const path = require('path');
 // Enables the discovery of the VS Code extensions in the embedded `plugins` folder in the final app.
-process.env.THEIA_DEFAULT_PLUGINS = `local-dir:${path.resolve(__dirname, '..', 'plugins')}`;
+process.env.THEIA_DEFAULT_PLUGINS = `local-dir:${path.resolve(
+  __dirname,
+  '..',
+  'plugins'
+)}`;
 process.env.THEIA_PLUGINS = [
-    process.env.THEIA_PLUGINS,
-    `local-dir:${path.resolve(os.homedir(), '.arduinoProIDE', 'plugins')}`
-].filter(Boolean).join(',');
+  process.env.THEIA_PLUGINS,
+  `local-dir:${path.resolve(os.homedir(), '.arduinoIDE', 'plugins')}`,
+]
+  .filter(Boolean)
+  .join(',');
 require('../src-gen/frontend/electron-main.js');