Simplified configuration

Description

This MR aims at simplifying the configuration process, particularly in the case of a bootstrap. This is achieved in two ways:

• The firmware can be taken straight from the artifacts repository published here: https://cmsgemos.web.cern.ch/repos/firmware/ It should provide better integration between the firmware and cmsgemos, allowing patches if needed (e.g. register renaming, lpGBT file format), easier deployment, and better traceability.
• It is now possible to configure the whole system without providing any back-end and front-end configuration files. Hardware, firmware, and software defaults are being used. No effort is made from the data quality point of view.

Warning: some paths have been renamed from gem to cmsgemos for better coherency and to avoid possible name conflicts with the Ruby GEMs.

Also includes a bug-fix against reg.py crashes upon write error.

Related Issue

How Has This Been Tested?

Using the b904 GE1/1 integration setup with and without configuration is seamless. The rates are similar with respect to the previous structure.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• All new and existing tests passed.