Refactor: Remove deprecated gRPC service files and implement new API structure

- Deleted old gRPC service definitions in `game_grpc.pb.go` and `public.go`.
- Added new API server implementations for objectstory, player, and shop services.
- Introduced configuration files for new APIs in `etc/*.yaml`.
- Created main entry points for each service in `objectstory.go`, `player.go`, and `shop.go`.
- Removed unused user update handler and user API files.
- Added utility functions for context management and HTTP header parsing.
- Introduced PostgreSQL backup configuration in `backup/postgreSql.yaml`.

app/wallet/api/wallet.go

@@ -0,0 +1,34 @@
+// Code scaffolded by goctl. Safe to edit.
+// goctl 1.9.2
+
+package main
+
+import (
+	"flag"
+	"fmt"
+
+	"juwan-backend/app/wallet/api/internal/config"
+	"juwan-backend/app/wallet/api/internal/handler"
+	"juwan-backend/app/wallet/api/internal/svc"
+
+	"github.com/zeromicro/go-zero/core/conf"
+	"github.com/zeromicro/go-zero/rest"
+)
+
+var configFile = flag.String("f", "etc/wallet-api.yaml", "the config file")
+
+func main() {
+	flag.Parse()
+
+	var c config.Config
+	conf.MustLoad(*configFile, &c)
+
+	server := rest.MustNewServer(c.RestConf)
+	defer server.Stop()
+
+	ctx := svc.NewServiceContext(c)
+	handler.RegisterHandlers(server, ctx)
+
+	fmt.Printf("Starting server at %s:%d...\n", c.Host, c.Port)
+	server.Start()
+}