feat(hive-forge): add repo-create + repo-add-collaborator verbs

hive-forge/src/client.rs

@@ -206,6 +206,23 @@ impl Client {
         decode_json(resp, &format!("PUT {url}"))
     }
 
+    /// PUT a JSON body to `<api>/<path>` for an endpoint that returns
+    /// `204 No Content` (empty body), so there is nothing to decode.
+    /// Used by `repo-add-collaborator` (Forgejo's add-collaborator PUT
+    /// answers 204 on success).
+    pub fn put_no_content<B: Serialize>(&self, path: &str, body: &B) -> Result<()> {
+        let url = format!("{}{}", self.api(), path);
+        let resp = self
+            .http
+            .put(&url)
+            .header(CONTENT_TYPE, "application/json")
+            .json(body)
+            .send()
+            .context("PUT")?;
+        check_status(resp, &format!("PUT {url}"))?;
+        Ok(())
+    }
+
     /// DELETE `<api>/<path>`. Optional JSON body for endpoints that
     /// need it (Forgejo's subscription unwatch uses bodyless DELETE).
     pub fn delete(&self, path: &str, body: Option<&Value>) -> Result<()> {