Improve visual studio integration on Windows

[prabhu]

It appears like Visual Studio 2019 with SARIF viewer extension is not working quite well.

• Visual Studio is expecting the version attribute to be at the top! When we do to_json(sarif schema) the attributes are getting sorted alphabetically so the runs attribute is on the top and version is at the bottom. We need to find a workaround for this
• Our url encode is encoding and converting the backslash () to %5C thus confusing the extension

Attached is an example.

findsecbugs-report.sarif.txt