Move kraken,scheme,python,cpp fib tests over to koka_bench, add WAVM as a tested compiler backend for the Kraken benchmarks

koka_bench/scheme/scheme-fib-let.scm

@@ -0,0 +1,8 @@
+#!/usr/bin/env -S scheme --script
+(pretty-print ((letrec ((fib (lambda (n) (cond ((equal? n 0) 1)
+                                               ((equal? n 1) 1)
+                                               (#t (let (
+                                                        (r1 (fib (- n 1)))
+                                                        (r2 (fib (- n 2)))
+                                                    ) (+ r1 r2)))))))
+                        fib) (read (open-input-string (list-ref (command-line) 1)))))