Add first database version and model

Sources/App/Model/Migrations/UserTableMigration.swift

@@ -0,0 +1,32 @@
+import FluentSQLiteDriver
+
+struct UserTableMigration: Migration {
+
+    func prepare(on database: FluentSQLiteDriver.Database) -> EventLoopFuture<Void> {
+        let one = database.schema(User.schema)
+            .id()
+            .field(User.Key.name.key, .string, .required)
+            .field(User.Key.hash.key, .string, .required)
+            .field(User.Key.points.key, .int, .required)
+            .field(User.Key.table.key, .uuid, .references(Table.schema, Table.Key.id.key))
+            .create()
+        let two = database.enum(Table.Key.language.rawValue)
+            .case(SupportedLanguage.german.rawValue)
+            .case(SupportedLanguage.english.rawValue)
+            .create()
+
+        let three = database.enum(Table.Key.language.rawValue).read().flatMap { lang in
+            database.schema(Table.schema)
+                .id()
+                .field(Table.Key.name.key, .string, .required)
+                .field(Table.Key.isPublic.key, .bool, .required)
+                .field(Table.Key.language.key, lang, .required)
+                .create()
+        }
+        return one.and(two).and(three).map { _ in }
+    }
+
+    func revert(on database: FluentSQLiteDriver.Database) -> EventLoopFuture<Void> {
+        database.eventLoop.makeCompletedFuture(.success(()))
+    }
+}