docs: live preview (without VS Code)

[AlexanderLanin]

Provide the ability of a live preview outside of VS Code.
People are using different IDEs, and we cannot do a full integration into all of them.
But we can provide a generic preview ability, e.g. sphinx-autobuild.

Task:

• document why we use sphinx-autobuild (or some alternative)
• implement solution

[hoe-jo]

We also could provide additional configs, we are working on a configuration for Clion

[AlexanderLanin]

We also could provide additional configs, we are working on a configuration for Clion

Let's create a separate issue for CLion if we want to support that.