add routes for block, validate block slug

internal/http_block/http_block.go

@@ -0,0 +1,26 @@
+package http_block
+
+import (
+	"blocky/internal/block"
+	"net/http"
+
+	"github.com/go-chi/chi/v5"
+)
+
+func BlockRouter(b *block.Block) chi.Router {
+	router := chi.NewRouter()
+
+	router.Get("/{id}", func(w http.ResponseWriter, r *http.Request) {
+		w.Write([]byte("welcome"))
+	})
+
+	router.Post("/", func(w http.ResponseWriter, r *http.Request) {
+		w.Write([]byte("welcome"))
+	})
+
+	router.Delete("/{id}", func(w http.ResponseWriter, r *http.Request) {
+		w.Write([]byte("welcome"))
+	})
+
+	return router
+}