add samples for fun0Expectations also to api-infix

[robstoll]

Platform (all, jvm, js, android): all
Extension (none, kotlin 1.3): none

Code related feature

We also want to provide samples for the infix api

Following the things you need to do:

• copy Fun0ExpectationSamples from fluent-api to api-infix, adjust imports ...api.fluent... to ...api.infix... and adjust the samples accordingly (always use the infix syntax, never the fluent).
  • take a look at existing Samples (e.g. ListFeatureExtractorSamples) in api-infix for how to format comments
• check that the sample in the KDoc Intellij is showing looks good (ALT+Mouse-click on function name)

Your first contribution?

• Write a comment I'll work on this if you would like to take this issue over.
  This way we get the chance to revise the description in case things have changed in the meantime, we might give you additional hints and we can assign the task to you, so that others do not start as well.
• See Your first code contribution for guidelines.
• Do not hesitate to ask questions here or to contact us via Atrium's slack channel if you need help
  (Invite yourself in case you do not have an account yet).

[Kushiro-C]

I'll work on this