GitLab

* Ported TestCoreCaching to current integration test infra

* Removed useless TestBuilderEmptySketch

The same features are already tested in a number of other integration tests.

* Ported TestBuilderWithBuildPathInSketchDir to current integration test infra

* Ported TestLoadHardware to current integration test infra

* Moved user_hardware testdata resources

* Ported TestLoadHardwareMixingUserHardwareFolder to current integration test infra

* Removed redundant legacy tests

* Removed useless 'sleep' helper function

* Removed unused LoadAndInterpolate function

* Removed useless NoError helper function

* Grouped tests inside the same correct sub-group

* Ported TestFailIfBuildPathEqualsSketchPath and TestFailIfBuildPathEqualsSketchPathSketchPathDiffers to current integration test infra