Vendor dependencies

Let's see how I like this workflow.

vendor/pin-project-lite/tests/expand/naming/enum-none.expanded.rs

@@ -0,0 +1,26 @@
+use pin_project_lite::pin_project;
+enum Enum<T, U> {
+    Struct { pinned: T, unpinned: U },
+    Unit,
+}
+#[allow(single_use_lifetimes)]
+#[allow(clippy::unknown_clippy_lints)]
+#[allow(clippy::used_underscore_binding)]
+const _: () = {
+    impl<T, U> Enum<T, U> {}
+    #[allow(non_snake_case)]
+    struct __Origin<'__pin, T, U> {
+        __dummy_lifetime: ::pin_project_lite::__private::PhantomData<&'__pin ()>,
+        Struct: (T, ::pin_project_lite::__private::AlwaysUnpin<U>),
+        Unit: (),
+    }
+    impl<'__pin, T, U> ::pin_project_lite::__private::Unpin for Enum<T, U> where
+        __Origin<'__pin, T, U>: ::pin_project_lite::__private::Unpin
+    {
+    }
+    trait MustNotImplDrop {}
+    #[allow(clippy::drop_bounds, drop_bounds)]
+    impl<T: ::pin_project_lite::__private::Drop> MustNotImplDrop for T {}
+    impl<T, U> MustNotImplDrop for Enum<T, U> {}
+};
+fn main() {}