Fix #3309 and #3311: Implement Force Network Type Feature

[yashraj-01]

Explanation

Fixes #3309. Introduced UI for Force Network Type screen.
Fixes #3311. Implemented logic to force network type.
This PR also fixes #3379. cc: @rt4914

Mock link: https://xd.adobe.com/view/e8aa4198-3940-47f9-514a-f41cc54457f6-9e9b/screen/8ae1a60e-7f6d-4b7b-b741-469bb80007b9/specs/

Screenshots

• UI
  

• Espresso tests passing for DeveloperOptionsFragmentTest
  

• Espresso tests passing for ForceNetworkTypeActivityTest
  

• Espresso tests passing for ForceNetworkTypeFragmentTest
  

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.

[yashraj-01]

I have marked this PR as draft as I have not written the tests as of now. I'm waiting on the approval on PR #3471 and then will follow the same approach to write tests here. Also, the UI needs updates as I have to implement the logic for the selection of network types. That might depend on issue #3310. Thanks.

[BenHenning]

Thanks @yashraj-01. Had one follow-up.

[BenHenning]

Thanks @yashraj-01. This LGTM!

[anandwana001]

LGTM for code owner files.