Document the Che-specific features we've added to Che's IDEA editor

[azatsarynnyy]

Is your task related to a problem? Please describe

In the Che-IDEA project, we extended the vanilla IntelliJ IDEA with the Che-specific features and made some adaptations of IDEA's internals to the Che environment.

While it does everything the user might expect from IDEA running in Che, there's no way to read the details of using the particular feature and learn about some important aspects of its behavior.

Describe the solution you'd like

We need to document all the Che-specific features, we've added to our IntelliJ IDEA assembly, on the Che documentation website.

Describe alternatives you've considered

No response

Additional context

Below is the list of the features we can consider to document:

• running the Devfile Commands as IDEA's Launch Configurations with the possibility to run them in any container
• opening IDEA terminals to DevWorkspace containers
• detection of the opened ports and suggestions exposing corresponding apps' URLs
• navigating to Che Dashboard from the IDE

[che-bot]

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