Add wip android/ios lib builds

src/main.rs

@@ -1,4 +1,10 @@
 
+#[cfg(not(feature = "library"))]
 fn main() -> std::io::Result<()> {
     ew::run_server(false)
 }
+
+#[cfg(feature = "library")]
+fn main() {
+    panic!("Compiled with the library feature! You should load the shared object library and call the exported methods there.");
+}