Implement initial login functionality

internal/models/user.go

@@ -0,0 +1,15 @@
+package models
+
+// UserTable is the name of the table the [`User`] model is stored in.
+const UserTable = "users"
+
+// User represents a distillery user
+type User struct {
+	Pk uint `gorm:"column:pk;primaryKey"`
+
+	User         string `gorm:"column:user;not null;unique"` // name of the user
+	PasswordHash []byte `gorm:"column:password"`             // password of the user, hashed
+
+	Enabled bool `gorm:"enabled;not null"`
+	Admin   bool `gorm:"column:admin;not null"`
+}