location: adapt JSON schema for pickup_name required if is_pickup

Before this change, the location JSON schema accept that the location was a
pickup location (is_pickup=true) but without pickup_name. This fix change this
behavior ; when a location is defined as pickup location, then the 'pickup_name'
is now required.

Note : the schema already contains behavior for the formly editor

* Closes rero#794.

Co-Authored-by: Renaud Michotte <renaud.michotte@gmail.com>

rero_ils/modules/locations/jsonschemas/locations/location-v0.0.1.json

@@ -113,5 +113,28 @@
         }
       }
     }
-  }
-}
+  },
+  "oneOf": [
+    {
+      "properties": {
+        "is_pickup": {
+          "enum": [
+            true
+          ]
+        }
+      },
+      "required": [
+        "pickup_name"
+      ]
+    },
+    {
+      "properties": {
+        "is_pickup": {
+          "enum": [
+            false
+          ]
+        }
+      }
+    }
+  ]
+}