Cobertura updates/adherence

[lowlydba]

Currently SQLCover doesn't populate the filename field in its Cobertura report. Per the DTD, this is a required field.

Since many downstream tools that consume Cobertura will assume this field has a value, I think it is better to put something rather than nothing, to make a stronger attempt to adhere to the format and increase output ingestion compatibility.

There is also a 0.4 DTD available vs the 0.3 in use currently.

[sayantandey]

I have started a project based on this with added features like branch coverage, execution message output and additional fixes.
You can check if you are interested
https://github.com/sayantandey/SQLServerCoverage.

I integrated with ReportGenerator
Here's the sample of Cobertura report generated
I have added distribution for common platforms and details to build it for other platforms.