Add new reporter for sonarqube

Consider having `expect_snapshot(x, style = "serialize")` go to a binary file

`expect_type(..., "promise")` fails because of evaluating a promise

In CI, `testthat` says a snapshot is missing when it's not

`expect_snapshot` and friends suggest incorrect review and accept code when `variant` is not NULL

feat: `testthat::snapshot_download_gh()` should prompt user to run accept/review code

feat: Disable new snapshot error

Add codex detection

`expect_snapshot()` doesn't capture some output anymore (>= 3.3.2)

Add warnings to test