Add Karate configuration option to disable the "no features or scenarios found" assertion

[dustinsand]

If JUnit 5 is used to run a Karate feature file, but no scenarios are found that match the run criteria, this error is thrown:

no features or scenarios found: [classpath:karate/features/helloworld/]

For example, if Karate is run with these arguments and this feature file, the error will be thrown.

-Dkarate.options="--tags @smoke"

Feature: Hello World
@prod
Scenario: Hello to the world

The workaround is to add a scenario that does nothing, for example,

Feature: Hello World
@prod
Scenario: Hello to the world

@smoke
Scenario: Do Nothing

Opened this issue to start a discussion for adding a Karate configuration option to disable this error in com.intuit.karate.junit5.Karate.java.

[ptrthomas]

@dustinsand I do agree that throwing this error may be un-necessary - the original intent was in case user got the path wrong, the IDE would show a green bar even if zero tests were run. I'm ok to accept a PR to change this