Added UI/Integration tests for creating Accounts, Accounts list, Account details and Accounts Task mgmt. features

[varsvat]

This PR has been made on top of this PR

Please Add Screenshots If any UI changes:

1. Test Account creation successfully

• Enter Account identifier
• Enter name
• Enter Alternate account number
• Enter Ledger
• Enter Reference account number
• Enter Balance
• Navigate to the next stepper screen
• Create a new Account holder
• Edit existing Account holder
• Try deleting the account holder
• Navigate to the next screen
• Create a new Signature authority
• Navigate to the the final Review fragment of the stepper layout
• Check if the account was created successfully?
• delete the test entry from the database after the test is successful

https://user-images.githubusercontent.com/53621853/130322675-5729098e-c185-4769-a201-44bef45e5c4a.mp4

2. Test account state changed successfully

• launch the account list fragment
• open the account details fragment
• Click on the task linear layout
• enter comment while changing the state
• Assert if the state was updated successfully?

https://user-images.githubusercontent.com/53621853/130322694-3723c2e6-95b1-435a-b9db-877071d5f54b.mp4

3. Test Account List fragment and recyclerView onclick

• Launch the application
• Navigate to the teller list fragment and check if recyclerview is visible
• click on the recyclerView Item
• Assert if the item has been displayed correctly

Please Add Summary of what changes you have made and if possible provide links.(Optional)

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