FindbugsParser - Remove bug details from message field

[PaulCormier]

In the FindbugsParser, the details of the bug is being included in the Violation's message field.

violations-lib/src/main/java/se/bjurr/violations/lib/parsers/FindbugsParser.java

Line 73 in e083e67

messagesPerType.put(type, shortDescription + "\n\n" + details);

These messages can be very long, and also include HTML formatting. When viewing the report in GitLab (from a CodeClimate output) the message is difficult to read, and badly formatted.

Instead of including the details in the message field, the specifics map could be used. Or perhaps a new field added to Violation.

This would facilitate emitting the details in a more appropriate output field; for instance, in the CodeClimate's content field.

[tomasbjerre]

If it is removed from message, it would affect all tools using this library. So that is a pretty big thing to do.

Same with changing the Violation model, all tools would need to be adjusted.