Move watch to being a resthandler resource and expose it on LIST

GET /pods?watch=true&resourceVersion=10

will now function equivalent to GET /watch/pods.

hack/test-cmd.sh

@@ -570,6 +570,7 @@ __EOF__
     curl -s "http://127.0.0.1:${API_PORT}/swaggerapi/api/${version}" > "${file}"
     [[ "$(grep "list of returned" "${file}")" ]]
     [[ "$(grep "list of pods" "${file}")" ]]
+    [[ "$(grep "watch for changes to the described resources" "${file}")" ]]
   fi
 
   kube::test::clear_all