Respond with extension name and version

libs/compute_api/src/responses.rs

@@ -168,3 +168,9 @@ pub struct InstalledExtension {
 pub struct InstalledExtensions {
     pub extensions: Vec<InstalledExtension>,
 }
+
+#[derive(Clone, Debug, Default, Serialize)]
+pub struct ExtensionInstallResult {
+    pub extension: String,
+    pub version: String,
+}