Add telemetry events for loading extensions (#9793)

* Store extensions versions' wasm API version in the database
* Share a common struct for extension API responses between collab and
client
* Add wasm API version and schema version to extension API responses

Release Notes:

- N/A

Co-authored-by: Marshall <marshall@zed.dev>

crates/extension/src/extension_store_test.rs

@@ -262,6 +262,7 @@ async fn test_extension_store(cx: &mut TestAppContext) {
             None,
             fs.clone(),
             http_client.clone(),
+            None,
             node_runtime.clone(),
             language_registry.clone(),
             theme_registry.clone(),
@@ -381,6 +382,7 @@ async fn test_extension_store(cx: &mut TestAppContext) {
             None,
             fs.clone(),
             http_client.clone(),
+            None,
             node_runtime.clone(),
             language_registry.clone(),
             theme_registry.clone(),
@@ -538,6 +540,7 @@ async fn test_extension_store_with_gleam_extension(cx: &mut TestAppContext) {
             Some(cache_dir),
             fs.clone(),
             http_client.clone(),
+            None,
             node_runtime,
             language_registry.clone(),
             theme_registry.clone(),