DisplayArray turn an array into a multi-line string containing its items.

GetBuildVersion returns the CLI release version, or the latest git commit shorthash if the release could not be found (for local builds) Based on https://github.com/cue-lang/cue/issues/1697#issuecomment-1122097477.

SliceContains returns true if el in arr.

SliceFilter returns slice of T for which F returned true.