Consume VS Code built-in extensions in Che-Theia

Signed-off-by: Vladyslav Zhukovskyi <vzhukovs@redhat.com>

generator/src/foreach_yarn

@@ -9,6 +9,7 @@
 * SPDX-License-Identifier: EPL-2.0
 **********************************************************************/
 const fs = require('fs');
+const path = require('path');
 const spawnSync = require('child_process').spawnSync;
 
 const currentDir = __dirname;
@@ -35,6 +36,9 @@ fs.readdirSync(currentDir).forEach((pluginFolderName) => {
                 fs.copyFileSync(`${pluginFolderPath}/${fileName}`, `${targetDir}/${fileName}`);
             }
         })
+    } else if (fs.existsSync(`${pluginFolderPath}/extension.vsixmanifest`)) {
+        console.log(`\n✍️  Copying ${pluginFolderPath} VSCode built-in package to ${targetDir}/${pluginFolderName}`);
+        copyFolderSync(`${pluginFolderPath}`, `${targetDir}/${pluginFolderName}`);
     }
 });
 
@@ -45,3 +49,14 @@ function mkdirSyncRecursive(dir) {
         curPath.length > 0 && !fs.existsSync(curPath) ? fs.mkdirSync(curPath) : null;
     }
 };
+
+function copyFolderSync(from, to) {
+    fs.mkdirSync(to);
+    fs.readdirSync(from).forEach(element => {
+        if (fs.lstatSync(path.join(from, element)).isFile()) {
+            fs.copyFileSync(path.join(from, element), path.join(to, element));
+        } else {
+            copyFolderSync(path.join(from, element), path.join(to, element));
+        }
+    });
+}