Do not activate/load extension until required

[dominiksalvet]

Describe the bug
The extension is activated on VSCode startup:

I personally use multi-root workspaces and I have projects written in various languages, so the extension is often activated unnecessarily and adds extra start time.

Environment (please complete the following information):

• OS: Ubuntu 22.04.1 LTS
• VS Code version 1.73.0
• Extension version 1.5.4

Steps to reproduce
Steps to reproduce the behavior:

1. Install the extension
2. Close and open VSCode
3. Open extensions
4. See it activated and that took some time (e.g., 349 ms)

Expected behavior
It may be activated on some events. E.g. see the screenshot of Pylance config:

Actual behavior
It is activated on every VSCode startup.

[mshr-h]

Because this extension is currently not adopted to Multi Root Workspace API.

[mshr-h]

Addressed on v1.5.5.

[dominiksalvet]

Thank you! It works great. ❤️