#167350084 setup search bar

[EmmanuelSage]

What does this PR do?

• These PR implements the SearchBar molecule

Description of task to be completed?

• create flex container for the searchBar
• setup searchBar molecule
• setup styleguide for the searchBar molecule
• write tests for the searchBar molecules

How should this be manually tested?

• $ git clone https://github.com/andela/king-kong-ah-frontend.git
• $ npm install
• $ npm test
• $ npm run styleguide

Any background context you want to provide?

• You would need npm to run this application

What are the relevant pivotal tracker stories?

• PT Story link - #167350084

Screenshots (if appropriate)