chore: proj struct and swagger docs for backend

backend/internal/config/config.go

@@ -0,0 +1 @@
+package config

backend/internal/config/types.go

@@ -0,0 +1,4 @@
+package config
+
+type Config struct {
+}

backend/internal/handlers/agents.go

@@ -0,0 +1 @@
+package handlers

backend/internal/storage/db.go

@@ -0,0 +1 @@
+package storage