chore: add first handlers

backend/internal/storage/repository.go

@@ -0,0 +1,15 @@
+package storage
+
+import (
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+type Repository struct {
+	pool *pgxpool.Pool
+}
+
+func NewRepository(pool *pgxpool.Pool) *Repository {
+	return &Repository{
+		pool: pool,
+	}
+}

backend/internal/storage/types.go

@@ -0,0 +1,22 @@
+package storage
+
+type BaleType struct {
+	ID     int     `json:"id"`
+	Type   string  `json:"type"`
+	Weight float64 `json:"weight"`
+	Height float64 `json:"height"`
+	Width  float64 `json:"width"`
+	Length float64 `json:"length"`
+}
+
+type Bale struct {
+	ID        int    `json:"id"`
+	Type      string `json:"type"`
+	Timestamp string `json:"timestamp"`
+}
+
+type User struct {
+	ID       int    `json:"id"`
+	Username string `json:"username"`
+	Password string `json:"password"`
+}