Add great boy example (#48)

* Progress towards mock MainPod verification

* add MockMainPod.pub_statements logic so that when originid==SELF it is replaced by self.id()

* Basic op checking for mock MainPOD

* More op checking

* wip

* feat: add great boy example

* feat: put examples under cfg(test)

---------

Co-authored-by: Ahmad <root@ahmadafuni.com>
Co-authored-by: arnaucube <git@arnaucube.com>

src/lib.rs

@@ -2,3 +2,6 @@ pub mod backends;
 pub mod frontend;
 pub mod merkletree;
 pub mod middleware;
+
+#[cfg(test)]
+pub mod examples;