[feat] Add photo util

[taingmeng]

Description

Context

Checklist:

• Updated tests for this change.
• Tested the changes locally.
• Updated documentation.

Screenshots (if available)

Link to story (if available)

[taingmeng]

These 2 functions contain similar code. I'm okay if you leave it like that. If you want to refactor it a bit, you extract the similar part to:

const isUserIn = (user, userPool) => {
  return userPool.map(user => user.id).includes(user.id);
}

and use it like this:

export const isUserTagged = (user, photo) => {
  return isUserIn(user, photo.taggedUsers);
}

export const isUserTagged = (user, photo) => {
  return isUserIn(user, photo.user.blockedFriends);
}

[taingmeng]

In Javascript, you can achieve the same result by using .reduce if you want to accumulate a result from an array. For example:

export const getTotalClaps = story => {
  return story.fans.reduce((claps, fan) => claps + fan.claps.length, 0);
};

[taingmeng]

You can simplify this function to one line like this:

export const isValidAgeForDriving = age => age >= 18 && age <= 80;