hush: add function tests

diff --git a/shell/hush_test/hush-misc/func1.right b/shell/hush_test/hush-misc/func1.right
new file mode 100644
index 0000000..e21665a
--- /dev/null
+++ b/shell/hush_test/hush-misc/func1.right
@@ -0,0 +1,6 @@
+Hello
+Zero: 0
+One: 1 Param1: World
+Zero: 0 Param1: Restored
+Multi line function
+One: 1