Support Code Coverage

[PhilippSalvisberg]

Integrate support for code coverage provided by utPLSQL in the extension.

[PhilippSalvisberg]

Add a new context menu item "Code coverage report".

Works as "Run utPLSQL test" regarding utPLSQL path evaluation. The result is written to a temporary file (in the temp file folder) and opened with the application associated with the file extension ".html".

Default values are used for a_include_objects, a_exclude_objects and a_coverage_schemes parameters. This means that running a code coverage report for a schema subset will lead to less than 100% coverage.