add user registration

server/jest.config.js

@@ -0,0 +1,13 @@
+/*
+ * For a detailed explanation regarding each configuration property and type check, visit:
+ * https://jestjs.io/docs/configuration
+ */
+
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+  clearMocks: true,
+  collectCoverage: true,
+  coverageDirectory: "coverage",
+  coverageProvider: "v8",
+}