Add new acceptance test 101 capturing type mismatch at runtime.

examples/acceptance_tests/101/lib/foo.ak

@@ -0,0 +1,11 @@
+use aiken/fuzz
+
+test prop_option_distribution(opt via fuzz.option(fuzz.int())) {
+  fuzz.label(
+    when opt is {
+      None -> @"None"
+      Some(..) -> @"Some"
+    },
+  )
+  True
+}