Improve formatting of unit output

[cc-a]

The units tracked by the tool can be printed out it is run (see unit_static_analyser/__init__.py). The formatting for this is very basic and lacks basic context. An easy improvement would be to include the python module and line number for each unit. In the context of the run function the line number is available as key.line and the module name is available as checker.node_module_names[key].

[brianhjh]

hello, I think i can work on this. May I work on this?

[cc-a]

Please!