feat: support third party orm to interact with go-zero (#1286)

* fixes #987

* chore: fix test failure

* chore: add comments

* feat: support third party orm to interact with go-zero

* chore: refactor

zrpc/resolver/register.go

@@ -0,0 +1,11 @@
+package resolver
+
+import (
+	"github.com/tal-tech/go-zero/zrpc/resolver/internal"
+)
+
+// Register registers schemes defined zrpc.
+// Keep it in a separated package to let third party register manually.
+func Register() {
+	internal.RegisterResolver()
+}