BlissLauncher: Add support for R jar

1 job for 3658-r-weather in 4 minutes and 41 seconds (queued for 8 seconds)
Status Name Job ID Coverage
  Build
failed build #221785

00:04:41

 
Name Stage Failure
failed
build Build

Deprecated Gradle features were used in this build, making it incompatible with Gradle 6.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/5.4.1/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 2m 22s
304 actionable tasks: 239 executed, 65 from cache
Cleaning up file based variables
ERROR: Job failed: exit code 1