refactor(router): move api models into separate crate (#103)

crates/router/src/macros.rs

@@ -0,0 +1,46 @@
+#[macro_export]
+macro_rules! newtype_impl {
+    ($is_pub:vis, $name:ident, $ty_path:path) => {
+        impl std::ops::Deref for $name {
+            type Target = $ty_path;
+
+            fn deref(&self) -> &Self::Target {
+                &self.0
+            }
+        }
+
+        impl std::ops::DerefMut for $name {
+            fn deref_mut(&mut self) -> &mut Self::Target {
+                &mut self.0
+            }
+        }
+
+        impl From<$ty_path> for $name {
+            fn from(ty: $ty_path) -> Self {
+                Self(ty)
+            }
+        }
+
+        impl $name {
+            pub fn into_inner(self) -> $ty_path {
+                self.0
+            }
+        }
+    };
+}
+
+#[macro_export]
+macro_rules! newtype {
+    ($is_pub:vis $name:ident = $ty_path:path) => {
+        $is_pub struct $name(pub $ty_path);
+
+        $crate::newtype_impl!($is_pub, $name, $ty_path);
+    };
+
+    ($is_pub:vis $name:ident = $ty_path:path, derives = ($($trt:path),*)) => {
+        #[derive($($trt),*)]
+        $is_pub struct $name(pub $ty_path);
+
+        $crate::newtype_impl!($is_pub, $name, $ty_path);
+    };
+}