Add Optimism (#20824)

* Create info.json

* Create logo.png

* Fixes (sanity and consistency, auto)

Co-authored-by: cryptomanz <cryptomanz@users.noreply.github.com>

blockchains/optimism/assets/0x4200000000000000000000000000000000000042/info.json

@@ -0,0 +1,28 @@
+{
+    "name": "Optimism",
+    "symbol": "OP",
+    "type": "OPTIMISM",
+    "decimals": 18,
+    "description": "Optimism is a Layer 2 scaling solution for Ethereum.",
+    "website": "https://app.optimism.io/governance",
+    "explorer": "https://optimistic.etherscan.io/token/0x4200000000000000000000000000000000000042",
+    "status": "active",
+    "id": "0x4200000000000000000000000000000000000042",
+    "links": [
+        {
+            "name": "coinmarketcap",
+            "url": "https://coinmarketcap.com/currencies/optimism-ethereum/"
+        },
+        {
+            "name": "twitter",
+            "url": "https://twitter.com/optimismPBC"
+        },
+        {
+            "name": "github",
+            "url": "https://github.com/ethereum-optimism/"
+        }
+    ],
+    "tags": [
+        "governance"
+    ]
+}