options to automatically run build step from console for CI/CD integration

[dpmilian]

Currently the flow for building the firmware (on an esp32-s3 project) is:

1. open EEZ Studio
2. make changes in the UI
3. press build button
4. copy the src/ui folder over to the lib/ folder of the platformio project
5. compile the firmware (via VS Code or pio run)

For integration into automated build processes, I think it would be interesting to be able to directly run the build process with the .eez-project and ..eez-project-ui-state files, from the command line. This could help skip the steps 1-3 in the previous process, steps 4 and 5 are already easily automatable.

[mvladic]

Check #340, maybe it helps.