Dashmate error reporting could be improved

[ktechmidas]

Expected Behavior

Dashmate should tell me exactly what the issue is in the config

Current Behavior

As an example:
InvalidConfigFileFormatError: Invalid '/home/dashmate/.dashmate/config.json' config format: config/core must NOT have additional properties

Unfortunately this makes me unsure which parameter is config/core is not supposed to be there

Possible Solution

Improve error handling to highlight the exact problem, so I can rectify it

Context

Your Environment

• Version used: 1.3.0
• Environment name and version (e.g. Chrome 39, node.js 5.4): Ubuntu 22.04
• Operating System and version (desktop, server, or mobile): Ubuntu 22.04 (server)
• Link to your project: