Add Qwen2-7B to the list of zed.dev models (#15649)

Release Notes:

- N/A

---------

Co-authored-by: Nathan <nathan@zed.dev>

crates/collab/k8s/collab.template.yml

@@ -127,6 +127,16 @@ spec:
                 secretKeyRef:
                   name: google-ai
                   key: api_key
+            - name: QWEN2_7B_API_KEY
+              valueFrom:
+                secretKeyRef:
+                  name: hugging-face
+                  key: api_key
+            - name: QWEN2_7B_API_URL
+              valueFrom:
+                secretKeyRef:
+                  name: hugging-face
+                  key: qwen2_api_url
             - name: BLOB_STORE_ACCESS_KEY
               valueFrom:
                 secretKeyRef: