Add ranked icon and refactor overview user summary display

[sunnydl]

So if user is gold then we should display the gold icon, if challenger then challenger icon...

Assets of these can be obtained from https://developer.riotgames.com/docs/lol#:~:text=any%20ranked%20queue.-,Icons%20and%20Emblems,-The%20emblems%20and

If there is no way to get it from Riot's public hosting (data dragon), then would have to download the files and include them in frontend assets folder

[sunnydl]

Summoner rank icon should be put on the same line of rank, so example of that would be

Rank:                                      <SummonerRankIcon/> {rank}
League Points:                                         {leaguePoints}
Level:                                                        {level}
WinRate:                                                   <WinRate/>

Since you are touching the overview page could you also make the winRate display like what you did for leaderboard? (So WinRate instead of Win and Loss)