[#1] Add basic structure and operations

Signed-off-by: Denis Kirillov <denis@nspcc.ru>

cmd/neofs-rest-gw/main.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	"context"
+
+	"github.com/go-openapi/loads"
+	"github.com/nspcc-dev/neofs-rest-gw/gen/restapi"
+	"github.com/nspcc-dev/neofs-rest-gw/gen/restapi/operations"
+	"go.uber.org/zap"
+)
+
+func main() {
+	ctx := context.Background()
+
+	v := config()
+	logger := newLogger(v)
+
+	neofsAPI, err := newNeofsAPI(ctx, logger, v)
+	if err != nil {
+		logger.Fatal("init neofs", zap.Error(err))
+	}
+
+	swaggerSpec, err := loads.Analyzed(restapi.SwaggerJSON, "")
+	if err != nil {
+		logger.Fatal("init spec", zap.Error(err))
+	}
+
+	api := operations.NewNeofsRestGwAPI(swaggerSpec)
+	server := restapi.NewServer(api, serverConfig(v))
+	defer func() {
+		if err = server.Shutdown(); err != nil {
+			logger.Error("shutdown", zap.Error(err))
+		}
+	}()
+
+	server.ConfigureAPI(neofsAPI.Configure)
+
+	// serve API
+	if err = server.Serve(); err != nil {
+		logger.Fatal("serve", zap.Error(err))
+	}
+}