Implement MVVM Architecture

[iadeelzafar]

Description:
Implement MVVM(Model View ViewModel) architecture in the project.

[galihsatriawan]

Description

• Description of issue
  Implement MVVM
• Output before solved
  No Design Pattern
• Changes in Issue
  Have implemented MVVM
• Output of solved issue

Type of Changes?

Just put an x in the [ ] which are valid.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Testing Suites

How Has This Been Tested?

Please describe the tests that you ran to verify your changes.

• ./gradlew assembleDebug assembleRelease

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

[iadeelzafar]

@galihsatriawan If you've worked on this issue then you may want to refer this from the PR that solves this issue.

[galihsatriawan]

I have had a mistake before, I have worked 2 issues but it's merged in one pull request, How can I resolve it?

[iadeelzafar]

This ticket is up for grabs.