chore: add docs to swagger and add pass handlers

backend/internal/handlers/registry_handlers.go

@@ -0,0 +1,17 @@
+package handlers
+
+import (
+	"github.com/gin-gonic/gin"
+)
+
+func Register(router *gin.Engine) {
+	v1 := router.Group("api/v1")
+	posts := v1.Group("posts")
+	{
+		posts.GET("/", GetPosts)
+		posts.GET("/:id", GetPost)
+		posts.POST("/", CreatePost)
+		posts.PUT("/:id", UpdatePost)
+		posts.DELETE("/:id", DeletePost)
+	}
+}