[PR] Fix for #20 - Search Bug

[Nyumat]

Changes:

• Added the first test useSearch.test.tsx which will test the useSearch.tsx hook's behaviors
  • Yes, more tests will be coming soon. Just wanted to setup the environment in this first iteration
• Fixed Back Button Bug in Search does not work after return to search results from a selcted title #20
  • Issue was the show flag which determines whether or not to render the children containing a race condition)
  • Fix was lifting the state, utilizing React's useCallback() hook and memoizing re-renders.
• Added PROD url to link on "NyumatFlix" in the README.md
• Removed unnecessary side-effects to make the state more atomic and obvious
• Cleanup function in useSearch for component unmount

TODO:

• Add a global state management solution
• Currently considering RTK, XState, and Zustand
• Finish the rest of the hooks/ tests