[ALS-5612] Create stored procedure to create a user (#154)

* Add a new stored procedure to enable user creation

* Specific database Auth

* Update CreateUserWithRole stored procedure in auth DB

The stored procedure, CreateUserWithRole, in the 'auth' database has been updated to improve user creation. It now checks for existing users and roles, and generates a new UUID if needed. Additionally, it associates new users with roles if they exist.

* Rename CreateUserWithRole stored procedure file

* Add general metadata parameter to CreateUserWithRole procedure

pic-sure-auth-db/db/sql/V4__ADD_CREATE_USER_STORED_PROCEDURE.sql

@@ -0,0 +1,32 @@
+USE `auth`;
+
+DROP PROCEDURE IF EXISTS CreateUserWithRole;
+DELIMITER //
+CREATE PROCEDURE CreateUserWithRole (
+    IN user_email VARCHAR(255),
+    IN connection_id VARCHAR(255),
+    IN role_name VARCHAR(255),
+    IN user_general_metadata varchar(255)
+)
+BEGIN
+    -- Attempt to retrieve the UUIDs for the user and role based on the provided information
+SELECT @userUUID := uuid FROM auth.user WHERE email = user_email AND connectionId = connection_id;
+SELECT @roleUUID := uuid FROM auth.role WHERE name = role_name;
+
+-- If the user does not exist, create a new user entry
+IF @userUUID IS NULL THEN
+        -- Generate a new UUID for the user
+        SET @userUUID = UNHEX(REPLACE(UUID(), '-', ''));
+        -- Retrieve the UUID for the connection
+SELECT @connectionUUID := uuid FROM auth.connection WHERE id = connection_id;
+-- Insert the new user record into the user table
+INSERT INTO auth.user (uuid, general_metadata, acceptedTOS, connectionId, email, matched, subject, is_active, long_term_token)
+VALUES (@userUUID, user_general_metadata, CURRENT_TIMESTAMP, @connectionUUID, user_email, 0, NULL, 1, NULL);
+END IF;
+
+    -- If the role exists, associate the user with the role
+    IF @roleUUID IS NOT NULL THEN
+        INSERT INTO auth.user_role (user_id, role_id) VALUES (@userUUID, @roleUUID);
+END IF;
+END//
+DELIMITER ;