Bundle for performance

[dragonly]

The publish CI outputs messages like this

This extension consists of 557 files, out of which 246 are JavaScript files.
For performance reasons, you should bundle your extension: https://aka.ms/vscode-bundle-extension.
You should also exclude unnecessary files by adding them to your .vscodeignore: https://aka.ms/vscode-vscodeignore

We should do as it suggests.

[baurine]

got it, will do it later.