Add Student Coin logo and info (#6458)

---PLEASE READ---

We are currently performing migration from old to a new token:
Old: https://etherscan.io/token/0xb8B7791b1A445FB1e202683a0a329504772e0E52
New: https://etherscan.io/token/0x15b543e986b8c34074dfc9901136d9355a537e7e

Our new token does not meet the requirements but we have a lot of off chain users on CoinTiger exchange, and on our launchpad we have over 150,000 Users which will recieve their tokens on May 9th.

blockchains/ethereum/assets/0x15B543e986b8c34074DFc9901136d9355a537e7E/info.json

@@ -0,0 +1,11 @@
+{
+    "name": "Student Coin",
+    "website": "https://www.studentcoin.org",
+    "description": "Student Coin is the first crypto platform that allows users to easily design, create, and manage personal, start-up, NFT, and DeFi tokens.",
+    "explorer": "https://etherscan.io/token/0x15b543e986b8c34074dfc9901136d9355a537e7e",
+    "type": "ERC20",
+    "symbol": "STC",
+    "decimals": 18,
+    "status": "active",
+    "id": "0x15B543e986b8c34074DFc9901136d9355a537e7E"
+}