Add CoinDCX icon

[ch3thanhs]

• Added icon for coindcx.com
• SimilarWeb Rank - 150,876 - https://www.similarweb.com/website/coindcx.com/#overview

[Kvasenok]

Hey, @ch3thanhs The icon seems to have small margins on the sides which make it look smaller, here is an icon without margins

Also, it probably needs a dark mode icon since the "Coin" part is hard to see on a dark background. Here is one. Note: it looks like the "Coin" and the "DCX" are uneven, but if you zoom real close they are actually exact match. It's due to the orange part outline blurring in with dark background.

[ch3thanhs]

Thank you @Kvasenok, Will use these icons.

[jamie-mh]

Thanks!