feat: Create secret.json

This commit adds the JSON configuration file for Secret Network's pulsar-3 testnet

Signed-off-by: Juan-luke Klopper <[email protected]>

chains/testnet/secret.json

@@ -0,0 +1,19 @@
+{
+    "chain_name": "secret",
+    "alias": "secret network",
+    "api": ["https://api.pulsar.scrttestnet.com","https://lcd.testnet.secretsaturn.net","https://pulsar.api.trivium.network:1317"],
+    "rpc": ["https://rpc.pulsar.scrttestnet.com","https://rpc.testnet.secretsaturn.net","https://pulsar.api.trivium.network:26657"],
+    "snapshot_provider": "",
+    "sdk_version": "0.45.16",
+    "coin_type": "529",
+    "min_tx_fee": "5000",
+    "addr_prefix": "secret",
+    "logo": "/logos/secret.png",
+    "assets": [{
+        "base": "uscrt",
+        "symbol": "SCRT",
+        "exponent": "6",
+        "coingecko_id": "", 
+        "logo": "/logos/secret.png"
+    }]
+}