Setting verse key by text

Add the ability to set a very key by text
Make the main.rs iterate random verses in John 3

src/module.rs

@@ -17,4 +17,8 @@ impl Module {
     pub fn strip_text(&mut self) -> String {
         self.module.pin_mut().strip_text()
     }
+
+    pub fn set_key_text(&mut self, key_text: &String) {
+        self.module.pin_mut().set_key_text(key_text);
+    }
 }