Full integration with test pane

[rpedretti]

This PR adds:

• Read the test plan for the test build scheme and add to test explorer
• Handle file change, creation and deletion to update the test explorer
• Fix the commands to run the tests
• The load should handle both SPM and non-SPM since the tests are reading from the test plan
• Remove overall test result since we update all from logs

This pr fixes:

• Getting code blocks from class

To do:

• Mark tests as skipped if they are skipped on test plan

[hyzyla]

😍 thanks for this pr. I need some time to review and test all changes, but at the first glance looks pretty good

[cameroncooke]

Any movement on this?

[bryan1anderson]

Where is this at.. can we get it merged if we fix the conflicts?

[BlackWolf]

@hyzyla I am currently also looking into testing improvements, would be good to know what the plan is with this PR. I think it's a good approach and would be nice to get it merged, but I think we need to combine it with other approaches. I tested it with a complex project of mine with multiple targets, SPM modules, etc. and it didn't detect the tests properly. I can look into it if it can be fixed, but I think it's because autocreated test plans are not saved to disk and we cannot read them in this way.

I am currently looking into an approach using xcodebuild --enumerate-tests, maybe combining both makes sense. I think it will take a bit until I have something mergeable, but I'm just not sure if I should open a second PR about tests now or not.