Route coverage

When running Camel unit tests you can turn on route coverage which stores data in xml file.
http://camel.apache.org/camel-test.html

We should parse those and be able to match which source code lines match which EIPs and then somehow show that in the code with a coverage numbers of some sort.

Maybe in the gutter we can show a red / yellow / green number that shows how many times it has been executed or something.

Start with Camel unit-test route coverage and the route coverage XML described in the issue, using the linked Camel test documentation as context. Determine how source lines could be matched to EIPs and how coverage should appear in the editor; the issue does not identify files, tests, or an agreed completion criterion.

Written by the indexing model from the issue text.