Serve compiled front from the same application

also add embedded build for production

internal/apitest/post_user_test.go

@@ -59,7 +59,7 @@ func testPostUserHandler(t *testing.T, userJson string, expectedCode int) {
 	router := testutils.TestSetup()
 	w := httptest.NewRecorder()
 
-	req, _ := http.NewRequest("POST", "/auth/signup",
+	req, _ := http.NewRequest("POST", "/ws/auth/signup",
 		strings.NewReader(string(userJson)))
 	router.ServeHTTP(w, req)