Add reset initial password

<UserStory> AUTH002 : Reset Initial Password </UserStory>

    <Changes>
    - Added logic for resetting initial password
    - Code Cleanup
    </Changes>

    <Review>
    Smitha Mohan
    </Review>

Trenser.Zenvy/Trenser.Zenvy/services/AuthenticationManagementService.h

@@ -14,6 +14,6 @@ public:
 	AuthenticationManagementService() : m_dataStore(DataStore::getInstance()) {};
 	std::tuple<Enums::LoginStatus, Enums::EmployeeType, Enums::EmployeeDesignation> login(const std::string& username, const std::string& password);
 	void logout();
-	void changePassword(std::string);
+	void changePassword(const std::string&);
 };