Create GameQuestion Page (a page where questions are shown one by one)

[dkuzma1]

• [x] #21
• [x] #22
• [x] #23
• [x] #24

[NattiShakira]

Additional tasks to be done:

• check dependencies arrays in useEffect hooks on this page;
• make the right answer to turn into green after ~20 seconds, then after ~10 more sec. automatic rerouting;
• a user cannot click an answer after the right answer is displayed;
• add countdown;
• if it's the last question, reroute to the final result page? Or where this count shoud be performed? In Standings component?
• what happens if a user doesn't click a button? Carefull with an empty object sent to the back-end;
• how to control that similar questions are not shown in the same game (similar = have either the same title/name or the same image).

[NattiShakira]

Commits:

• client: 95a90c6a591e93f7f4e9bbdbf7e6f222dd43b13d
• server: 3620d95597891a50bc030ebf6dbe0a98bbe5eab6