Add authenticate

- Create new controller authenticate with login root..
 - Update and manage error message socket io.
 - Create enum for environment variables

back/src/Enum/EnvironmentVariable.ts

@@ -0,0 +1,5 @@
+const SECRET_KEY = process.env.SECRET_KEY || "THECODINGMACHINE_SECRET_KEY";
+
+export {
+    SECRET_KEY
+}