add database models and queries for user management

internal/db/generated/models.go

@@ -0,0 +1,19 @@
+// Code generated by sqlc. DO NOT EDIT.
+// versions:
+//   sqlc v1.28.0
+
+package db
+
+import (
+	"time"
+
+	"github.com/google/uuid"
+)
+
+type User struct {
+	Uuid        uuid.UUID  `json:"uuid"`
+	PhoneNumber string     `json:"phone_number"`
+	CreatedAt   time.Time  `json:"created_at"`
+	Verified    bool       `json:"verified"`
+	VerifiedAt  *time.Time `json:"verified_at"`
+}