Re-implement user relationships.

src/routes/users/fetch_relationship.rs

@@ -0,0 +1,10 @@
+use crate::database::{entities::User, guards::reference::Ref, permissions::get_relationship};
+use rocket_contrib::json::JsonValue;
+use crate::util::result::Result;
+
+#[get("/<target>/relationship")]
+pub async fn req(user: User, target: Ref) -> Result<JsonValue> {
+    Ok(json!({
+        "status": get_relationship(&user, &target)
+    }))
+}