Expose functionality via CLI

[postatum]

Expose parse/translate/validate functionality the same way amf does but try to reduce the number of arguments.

For implementation details see:

• JS: https://github.com/aml-org/amf/blob/build/develop/amf-client/js/src/main/scala/amf/Main.scala
• JS bin: https://github.com/aml-org/amf/blob/build/develop/amf-client/js/bin/amf
• Java: https://github.com/aml-org/amf/blob/build/develop/amf-client/jvm/src/main/scala/amf/Main.scala
• buildCommandLine command in build.sbt