Fix #662: Introduced download permissions for device settings in domain layer

[rt4914]

Fix #662 - Lowfi Device Settings

Explanation

Mock Link: https://xd.adobe.com/view/e8aa4198-3940-47f9-514a-f41cc54457f6-9e9b/screen/71345025-f19e-4cac-a63f-e94442540e8f/Settings-6/

This PR is related to the Downloading Permissions inside AdministratorControls.
The permissions will be accessible by any user but can be updated by admin profile only.

Considering that @BenHenning has already given guidance on this and this PR is somewhat straight forward, @veena14cs & @nikitamarysolomanpvt will be the only reviewer of this PR.

Checklist

• The PR title starts with "Fix #bugnum: ", followed by a short, clear summary of the changes. (If this PR fixes part of an issue, prefix the title with "Fix part of #bugnum: ...".)
• The PR explanation includes the words "Fixes #bugnum: ..." (or "Fixes part of #bugnum" if the PR only partially fixes an issue).
• The PR follows the style guide.
• The PR does not contain any unnecessary auto-generated code from Android Studio.
• The PR is made from a branch that's not called "develop".
• The PR is made from a branch that is up-to-date with "develop".
• The PR's branch is based on "develop" and not on any other branch.
• The PR is assigned to an appropriate reviewer in both the Assignees and the Reviewers sections.

[rt4914]

@veena14cs actually I missed that you are still reviewing this PR. Will wait for your review to get finished

[veena14cs]

Please take a look at testcases

[veena14cs]

LGTM.