Feat: Add UI/Integration tests for creating group, group list and group details

[jawidMuhammadi]

Fixes #Issue_number

Please Add Screenshots If any UI changes.

1. Test creating a group item successfully

• Fill group details
• Add a member
• Add a leader
• Add address details
• Open review screen
• Click on the complete button
• Assert that snack bar message has been displayed

2. Test creating a group item with invalid office name

• Fill group details
• Enter office name with less than 5 character
• Click on NEXT button
• Assert that it doesn't allow navigating to add member fragment

3. Test group list item

• Open navigation drawer
• Navigate to Group fragment
• Click on Group item with "group001" identifier
• Assert that group item details have been displayed correctly on GroupDetails screen

Please make sure these boxes are checked before submitting your pull request - thanks!

• Apply the AndroidStyle.xml style template to your code in Android Studio.

• Run the unit tests with ./gradlew check to make sure you didn't break anything.

• If you have multiple commits please combine them into one commit by squashing them.

[miPlodder]

@jawidMuhammadi Add GIF for every PR which you are raising, let's follow the protocol. You can refer to PR for integration tests.

[jawidMuhammadi]

@jawidMuhammadi Add GIF for every PR which you are raising, let's follow the protocol. You can refer to PR for integration tests.

I was using an emulator, it is difficult to record screens for testing, but if it is necessary then I will add GIF in here too.

[miPlodder]

Can you check this link and add ./gradlew build connectedAndroidTest --stacktrace to ensure that UI tests run on the Travis build also, I see they are skipped now.

[jawidMuhammadi]

@therajanmaurya please review and merge the code, thank you.