* fix: compare getStatus() as boolean in project/run existence checks

RunResponse::getStatus() and ProjectResponse::getStatus() return the
JSON success flag (bool|null) from the Qase API envelope, not an HTTP
status code. Comparing them to 200 was always false, so
isTestRunExist() and isProjectExist() incorrectly reported existing
resources as missing. This surfaced as spurious "Run with id X not
found" errors whenever a pre-created run id was passed via config.

* chore: bump version to 2.1.19