Main new features:
- Replaced Autotools with Meson;
- Added MySQL/MariaDB and PostgreSQL database support;
- Replaced ras-mc-ctl with an improved version, in Python;
- Features are now mapped as modules that are auto-registered in runtime;
- ARM processor error vendor data can now accept multiple vendor decoders;
- Added unit tests for both rasdaemon and ras-mc-ctl;
- Improved docs with kernel-doc API description;
- Fixed multiple issues at the code.