feat: implement restrict email settings configuration to Admin

[Amenu-sh]

Ticket

ID: #13
Link:https://project-ascend-io.atlassian.net/browse/PAP-209

Problem

Admin and non-admin users can view, edit, and configure email settings, violating the intended access controls.

Solution

Access controls have been implemented to restrict non-admin users. Only admin users will have full access to view, edit, and configure email settings, while non-admin users will have view-only permissions.

Type of change

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality not to work as expected)
• This change requires a documentation update

How Has This Been Tested?

The solution was tested locally by logging in with different user roles, both as an admin and a non-admin, to verify access restrictions and ensure that only admin users have full access to email settings.

Checklist:

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[oestrada1001]

This definitely works for now. As we continue to add more roles this will become cumbersome.