[WIP] Config refactoring

[VukW]

Right now configuration process is quite a complex: settings are spread over two places (config.py and yaml profiles), both are rewritten multiple times during app init, with possible overriding by CLI params. At the same time some settings like UI, Auth, Comms objects are fixed just once at the very start of the app and cannot be reconfigured easily later. However, for web-UI we aim to support a runtime change of profile / auth, so user can log in and use web-ui without restarting CLI command. For that I do need to refactor config init approach - and, at the same time, it's possible to simplify configuration init for the future usage.

[github-actions[bot]]

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