Add Neutron chain assets (cosmos#2081)

* Add Neutron testnet data (#1)

* Add Neutron testnet data

* Add chain logos

* Add P2P.ORG public nodes

* Add mintscan

* Add logos to chain

* Update Neutron testnet details

* Remove wrong quote (cosmos#2)

* Add neutron mainnet configuration

* Fix chain name

* fix typo

* dummy commit

Author: albertandrejev

neutron/assetlist.json

@@ -0,0 +1,27 @@
+{
+  "$schema": "../assetlist.schema.json",
+  "chain_name": "neutron",
+  "assets": [
+    {
+      "description": "The native token of Neutron chain.",
+      "denom_units": [
+        {
+          "denom": "untrn",
+          "exponent": 0
+        },
+        {
+          "denom": "ntrn",
+          "exponent": 6
+        }
+      ],
+      "base": "untrn",
+      "name": "Neutron",
+      "display": "ntrn",
+      "symbol": "NTRN",
+      "logo_URIs": {
+        "png": "https://raw.githubusercontent.com/cosmos/chain-registry/master/neutron/images/neutron.png",
+        "svg": "https://raw.githubusercontent.com/cosmos/chain-registry/master/neutron/images/neutron.svg"
+      }
+    }
+  ]
+}

neutron/chain.json

@@ -0,0 +1,114 @@
+{
+  "$schema": "../chain.schema.json",
+  "chain_name": "neutron",
+  "status": "live",
+  "network_type": "mainnet",
+  "pretty_name": "Neutron",
+  "chain_id": "neutron-1",
+  "bech32_prefix": "neutron",
+  "daemon_name": "neutrond",
+  "node_home": "$HOME/.neutrond",
+  "key_algos": [
+    "secp256k1"
+  ],
+  "slip44": 118,
+  "fees": {
+    "fee_tokens": [
+      {
+        "denom": "untrn",
+        "low_gas_price": 0.01,
+        "average_gas_price": 0.025,
+        "high_gas_price": 0.05
+      }
+    ]
+  },
+  "codebase": {
+    "git_repo": "https://github.com/neutron-org/neutron",
+    "recommended_version": "v1.0.1",
+    "compatible_versions": [],
+    "cosmos_sdk_version": "0.45",
+    "consensus": {
+      "type": "tendermint",
+      "version": "0.34"
+    },
+    "cosmwasm_version": "0.31",
+    "cosmwasm_enabled": true,
+    "ibc_go_version": "4.3.0",
+    "genesis": {
+      "genesis_url": "https://raw.githubusercontent.com/neutron-org/mainnet-assets/main/neutron-1-genesis.json"
+    },
+    "versions": [
+      {
+        "name": "v1.0.1",
+        "recommended_version": "v1.0.1",
+        "compatible_versions": [],
+        "cosmos_sdk_version": "0.45",
+        "consensus": {
+          "type": "tendermint",
+          "version": "0.34"
+        },
+        "cosmwasm_version": "0.31",
+        "cosmwasm_enabled": true,
+        "ibc_go_version": "4.3.0"
+      }
+    ]
+  },
+  "logo_URIs": {
+    "png": "https://raw.githubusercontent.com/cosmos/chain-registry/master/neutron/images/neutron-black-logo.png",
+    "svg": "https://raw.githubusercontent.com/cosmos/chain-registry/master/neutron/images/neutron-black-logo.svg"
+  },
+  "peers": {
+    "seeds": [
+      {
+        "id": "24f609fb5946ca3a979f40b7f54132c00104433e",
+        "address": "p2p-erheim.neutron-1.neutron.org:26656",
+        "provider": "Neutron"
+      },
+      {
+        "id": "b1c6fa570a184c56d0d736d260b8065d887e717c",
+        "address": "p2p-kralum.neutron-1.neutron.org:26656",
+        "provider": "Neutron"
+      },
+      {
+        "id": "20e1000e88125698264454a884812746c2eb4807",
+        "address": "seeds.lavenderfive.com:19156",
+        "provider": "Lavender.Five Nodes 🐝"
+      }
+    ],
+    "persistent_peers": [
+      {
+        "id": "e5d2743d9a3de514e4f7b9461bf3f0c1500c58d9",
+        "address": "neutron.peer.stakewith.us:39956",
+        "provider": "StakeWithUs"
+      }
+    ]
+  },
+  "apis": {
+    "rpc": [
+      {
+        "address": "https://rpc-kralum.neutron-1.neutron.org",
+        "provider": "Neutron"
+      }
+    ],
+    "rest": [
+      {
+        "address": "https://rest-kralum.neutron-1.neutron.org",
+        "provider": "Neutron"
+      }
+    ],
+    "grpc": [
+      {
+        "address": "grpc-kralum.neutron-1.neutron.org:80",
+        "provider": "Neutron"
+      }
+    ]
+  },
+  "explorers": [
+    {
+      "kind": "Mintscan",
+      "url": "https://www.mintscan.io/neutron",
+      "tx_page": "https://www.mintscan.io/neutron/txs/${txHash}",
+      "account_page": "https://www.mintscan.io/neutron/account/${accountAddress}"
+    }
+  ]
+}