Add laconicd as a default network in wallet (#9)

Part of [laconicd testnet validator enrollment
](https://www.notion.so/laconicd-testnet-validator-enrollment-6fc1d3cafcc64fef8c5ed3affa27c675)

Co-authored-by: IshaVenikar <ishavenikar7@gmail.com>
Reviewed-on: cerc-io/laconic-wallet#9

.env.example

@@ -2,3 +2,4 @@ WALLET_CONNECT_PROJECT_ID=
 DEFAULT_GAS_PRICE=0.025
 # Reference: https://github.com/cosmos/cosmos-sdk/issues/16020
 DEFAULT_GAS_ADJUSTMENT=2
+LACONICD_RPC_URL=https://laconicd.laconic.com

react-native-config.d.ts

@@ -4,6 +4,7 @@ declare module 'react-native-config' {
     WALLET_CONNECT_PROJECT_ID: string;
     DEFAULT_GAS_PRICE: string;
     DEFAULT_GAS_ADJUSTMENT: string;
+    LACONICD_RPC_URL: string;
   }
 
   export const Config: NativeConfig;

src/utils/constants.ts

@@ -1,9 +1,22 @@
+import Config from 'react-native-config';
 import { COSMOS_TESTNET_CHAINS } from './wallet-connect/COSMOSData';
 import { EIP155_CHAINS } from './wallet-connect/EIP155Data';
 
 export const EIP155 = 'eip155';
 export const COSMOS = 'cosmos';
 export const DEFAULT_NETWORKS = [
+  {
+    chainId: 'laconic_9000-1',
+    networkName: 'laconicd',
+    namespace: COSMOS,
+    rpcUrl: Config.LACONICD_RPC_URL,
+    blockExplorerUrl: '',
+    nativeDenom: 'photon',
+    addressPrefix: 'laconic',
+    coinType: '118',
+    gasPrice: '0.01',
+    isDefault: true,
+  },
   {
     chainId: '1',
     networkName: EIP155_CHAINS['eip155:1'].name,