[ENHANCEMENT]Option to Collapse All Test Cases in Outline View

[Gloria323]

When using RobotCode in VS Code, the test cases in the Outline view are expanded by default, showing all variables and inner elements. This makes it difficult to get a high-level overview of all test cases, and also prevents quick navigation by simply clicking on a test case to jump to its location.

Currently, I have to manually collapse each test case one by one, which is quite inconvenient when working with large files.

Would it be possible to add a "Collapse All" button or an option to collapse all test cases with a single click?

Thank you!