Consider changing name to "kshell"

Most Kotlin developers with a Java background are used to the name "jshell" as part of the Java11+ releases. Also, I think the emphasis in the long name is on "shell" and not on the "interactive" because shells are interactive by convention. Thus, using the name "kshell" would be a better fit. You followed the same approach for javac/kotlinc and java/kotlin.

The issue proposes renaming the Kotlin interactive shell to "kshell" and mentions the existing "jshell", "javac"/"kotlinc", and "java"/"kotlin" naming patterns. No files, tests, or entry points are named, so first locate where the current shell name is defined and displayed. Done means the project consistently uses the agreed name.

Written by the indexing model from the issue text.