fix: add name field to genie manifest for non-interactive --set support (#384)

The CLI `apps init --set genie.genie-space.name=<value>` was rejected
because the genie manifest only declared `id`. The CLI generator needs
both `id` and `name` for valid DABs genie_space YAML. Every other
multi-field plugin already declares all its fields in the manifest.

Co-authored-by: Isaac

Author: pkosiec

packages/appkit/src/plugins/genie/manifest.json

@@ -14,6 +14,9 @@
           "id": {
             "env": "DATABRICKS_GENIE_SPACE_ID",
             "description": "Default Genie Space ID"
+          },
+          "name": {
+            "description": "Genie Space display name"
           }
         }
       }

template/appkit.plugins.json

@@ -92,6 +92,9 @@
               "id": {
                 "env": "DATABRICKS_GENIE_SPACE_ID",
                 "description": "Default Genie Space ID"
+              },
+              "name": {
+                "description": "Genie Space display name"
               }
             }
           }