add benchmark bindings (,tbs and ,tba)

go supports running benchmarks much similar to running tests,
the new key bindings will run single or all benchmark

modules/lang/go/config.el

@@ -55,8 +55,10 @@
           "n" #'+go/test-nested
           "g" #'go-gen-test-dwim
           "G" #'go-gen-test-all
-          "e" #'go-gen-test-exported)))
-
+          "e" #'go-gen-test-exported)
+        (:prefix ("tb" . "bench")
+          "s" #'+go/bench-single
+          "a" #'+go/bench-all)))
 
 (use-package! gorepl-mode
   :commands gorepl-run-load-current-file)