Added UI/Integration tests for Create/edit, view and list products

[varsvat]

This PR has been made on top of this PR

Please Add Screenshots If any UI changes.

1. Create Product using couchbase successfully

• Enter Product identifier
• Enter name
• Enter pattern package
• Enter the temporal unit
• Enter maximum Term Range
• Enter min. balance range
• Enter max. balance range
• Enter min. Interest Range
• Enter max. Interest Range
• Navigate to the next step
• Add an account assignment
• Enter designator, account identifier, ledger identifier
• Edit designator field of account assignment
• test delete account assignment
• Assert if the values in the product review step are correctly populated
• Check if the product was created successfully by querying sync-gateway for the desired product
• delete the test product entry from sync-gateway replicator

https://user-images.githubusercontent.com/53621853/130319308-0bbff424-d8d6-4579-aa76-bf3f8c733360.mp4

2. Test product list fragment

• Launch the application

• Navigate to the product list fragment and check if the recyclerView is visible

• Click on the recyclerView utem

• Assert if the product details screen shows the correct data

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

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

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