Refactor MapPage to be inside MapPageWrapper

[Denijar]

Developer Story As a developer, I want the repository to follow a consistent React file structure where higher level components are in higher level folders, and import sub components

Acceptance Criteria

• The MapPage component is refactored like so:

MapPageWrapper
|-- MapPageWrapper.jsx
|-- MapPage
    |-- MapPage.jsx
    |-- MapPage.module.css
    |-- MapPage.styles.js

• MapModal is a component and so should be moved to the components folder