Splash screen

[mog-rn]

Description

I have been able to add the splash screen for the app. I have also updated the path for the assets on app.json since they were wrong.

Fixes #7

Type of change

• [x] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)

How Has This Been Tested?

To test the changes I have been able to run the app on expo and the splash screen is displayed. I am not good with storybook so I have not been able to write any tests for this.

Checklist:

• [x] My code follows the style guidelines of this project
• [x] 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
• [x] My changes generate no new warnings
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes
• [ ] Any dependent changes have been merged and published in downstream modules

[mog-rn]

@brianwachira you can review this 🙏🏽

[mog-rn]

@brianwachira I have been able to resolve the issues that you had raised