Add useLocalStorage hook

[evargast]

• [x] create a new directory within src called hooks
• [x] within hooks, create a file called useLocalStorage.ts
• [x] create the hook (reference back to module 3 coursework)
• [x] this file should export a minimum of 2 things localStorageKeys and useLocalStorage
• [x] now that the directory and the file have been created, add the new path to our complier path aliases list such that we can have pretty imports (i.e. components/Target vs ../../components/Target)

// localStorageKeys will be a key:value object that contains the localStorage keys such that they can be referenced from other files 
const localStorageKeys = {
    keyIWantToUse: 'this is the key'
} 

// ---- 
// otherFile.ts 

// other files can then reference this object like:
... 
useLocalStorage(localStorageKeys['keyIWantToUse']);