feat(runtime): add agent package

- Implement Agent interface with methods for URI, Server, and Route
- Create agent struct with prefix, version, and server fields
- Add methods to set prefix and version
- Define default prefix and version constants
- Implement New function to create agent instance

agent/agent.go

@@ -0,0 +1,57 @@
+/*
+ * Copyright (c) 2024 OrigAdmin. All rights reserved.
+ */
+
+// Package agent implements the functions, types, and interfaces for the module.
+package agent
+
+import (
+	"fmt"
+
+	"github.com/go-kratos/kratos/v2/transport/http"
+)
+
+const (
+	DefaultPrefix  = "/api"
+	DefaultVersion = "v1"
+)
+
+type Agent interface {
+	URI() string
+	Server() *http.Server
+	Route() *http.Router
+}
+
+type agent struct {
+	prefix  string
+	version string
+	server  *http.Server
+}
+
+func (obj *agent) SetPrefix(prefix string) {
+	obj.prefix = prefix
+}
+
+func (obj *agent) SetVersion(version string) {
+	obj.version = version
+}
+
+func (obj *agent) Server() *http.Server {
+	return obj.server
+}
+
+func (obj *agent) Route() *http.Router {
+	return obj.server.Route(obj.URI())
+}
+
+func (obj *agent) URI() string {
+	return fmt.Sprintf("%s/%s", obj.prefix, obj.version)
+}
+
+func New(server *http.Server) Agent {
+	return &agent{
+		prefix:  DefaultPrefix,
+		version: DefaultVersion,
+		server:  server,
+	}
+}