test(services): add DbHandler usage in user.service.ts

This commit includes:
- The usage of `DbHandler.factorize` with sample values
- Testing log trace to monitor the result and fields of factored user data

Issue: #18
Signed-off-by: Mathis <yidhra@tuta.io>

src/services/user.service.ts

@@ -75,6 +75,19 @@ async function getUserFromIdService(id: string): Promise<IDbUser | ISError> {
 	}
 }
 
+/*
+DbHandler.factorize({
+	values: {
+		id: '011010101',
+		username: 'avnyr',
+		age: 42,
+		is_admin: true
+	},
+	actionName: "Testing"
+}).then((result)=>{
+	logger.trace(`\n\n> ${result._valuesArray.join(', ')}\n\n> ${result.totalFields}\n\n> ${result._keysTemplate}\n`)
+})*/
+
 //ToTest
 /**
  * Registers a new user.