Fix #3297: Implement Force Crash App Feature

[yashraj-01]

Explanation

Fixes #3297: Implemented force crashing of app.

Note for reviewers
In testDeveloperOptionsFragment_clickForceCrash_assertException we have asserted the message of exception.cause. This is because Espresso throws PerformException which is caused by the RuntimeException which we are throwing. You can check out the references below:

• https://stackoverflow.com/questions/50563600/assert-exceptions-in-android-espresso-test
• https://stackoverflow.com/a/64922103

Screenshots

• Working
  

• Espresso tests -- DeveloperOptuionsActivityTest
  

• Robolectric tests -- DeveloperOptuionsActivityTest
  

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.

[BenHenning]

Thanks @yashraj-01! Still LGTM--I have no other comments to add.

[rt4914]

LGTM, thanks.

[anandwana001]

I guess I was earlier got assigned due to merge from the develop branch, though LGTM, assign back your mentor for further action.

[yashraj-01]

@Sarthak2601 all the reviewers have approved the PR. Can you please merge it once all the checks pass? Thanks.