Code Lenses for Tests

[plemarquand]

When the swift.showTestCodeLenses setting is true, show code lenses inline in the editor above suites and tests. This setting defaults to false and must be enabled first.

The three lenses are Run, Debug, and Run w/ Coverage.

Issue: #1695

[MahdiBM]

It's fine with me either way but just asking that are we sure we want the "Run w/ coverage" button?
I personally have never used it in any project, regardless if I have code coverage enabled in CI or not (I usually do).
If it's a low-usage button we can just not add it. It's still accessible behind the test indicator button if anyone needs it once in a while.

Us having some telemetry about how much users use these buttons would have been nice, but that's a big can of worms ...

[plemarquand]

@MahdiBM I do use the "run with coverage" option sometimes on a single test as I want to make sure my test is exercising what I think it is. Maybe the setting shouldn't be a binary on/off but a tri-state of on/off/specific buttons I want to see

[MahdiBM]

Hmm I think on/off is fine, I dont think having an extra button will be annoying. Though having the ability to choose specific buttons will be an improvement even if little, so that's also fine.