Add login table sql scripts

SqlScripts/Login.sql

+create table Login(
+    id SERIAL PRIMARY KEY,
+    email TEXT,
+    user_password TEXT,
+    is_admin BOOLEAN
+)
+
+INSERT INTO Login
+    (email, user_password, is_admin)
+VALUES
+    ('user@helios.co.uk', 'userpassword', FALSE),
+    ('admin@helios.co.uk', 'adminpassword', TRUE)
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