feat: Hook up APIs

[ericahagle]

Description

• Updates generateRandomUserID function to utilize array of user data instead of simple base 10
• Adds fetch calls for:
  • fetchUsers(usersApi)
  • fetchHydrationData(hydrationApi)
  • fetchActivityData(activityApi)
  • fetchSleepData(sleepApi)
  • fetchAllTheData
• Adds event listener to scripts.js which fetches the Promises for all the data on load and updates global variables
• Updates tests for generateRandomUserID

Contributors

@ericahagle

Notes

• Totally cool with making updates as needed, but I think I at least have all of these working now
• Not sure if we still need the selectCurrentUser function anymore? Or maybe it just needs to be altered?

Checklist

• [x] My PR has an appropriately descriptive and concise title.
• [x] My PR denotes any/all team members who contributed to it.
• [x] My code follows the Turing Style Guides and best practices.
• [x] I ran the code locally and verified that there are no visible errors.
• [x] feat: My PR clearly describes what feature I'm adding and any changes needed to make it work. (if applicable)
• [x] refactor: My PR clearly describes what code I'm refactoring and why. (if applicable)

[ericahagle]

Note that I have not removed those hard-coded data files yet. I wanted to make sure we were happy with this stuff first. I plan to open a separate PR to remove them after this is approved/merged/etc.