chore(ci): make examples and integration tests more similar (#6617)
- Move `examples-tests/` into `turborepo-tests/` directory. I had wanted
them to be closer to examples before, but I think it makes more sense
for all tests to be together. Especially because prysk setup/execution
is so similar
- Consolidate the prysk setup and launcher. This will help revive the
effort to run examples tests on Windows
Some examples tests are failing, but I'm fairly confident it is
unrelated to this PR.