Add user registration with password hashing and restructure handlers directory

internal/auth/password.go

@@ -0,0 +1,10 @@
+package auth
+
+import (
+	"golang.org/x/crypto/bcrypt"
+)
+
+func HashPassword(password string) (string, error) {
+	bytes, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+	return string(bytes), err
+}