add base to local cached blockchain info

src/lib/helpers/chain.ts

@@ -11,6 +11,7 @@ export const chains = [
 	{ id: 1, slug: 'ethereum', name: 'Ethereum', explorer: 'https://etherscan.io', gas: 'ETH' },
 	{ id: 56, slug: 'binance', name: 'BNB Smart Chain', explorer: 'https://bscscan.com', gas: 'BNB' },
 	{ id: 137, slug: 'polygon', name: 'Polygon', explorer: 'https://polygonscan.com', gas: 'POL' },
+	{ id: 8453, slug: 'base', name: 'Base', explorer: 'https://basescan.org', gas: 'ETH' },
 	{ id: 43114, slug: 'avalanche', name: 'Avalanche C-chain', explorer: 'https://snowtrace.io', gas: 'AVAX' },
 	{ id: 42161, slug: 'arbitrum', name: 'Arbitrum One', explorer: 'https://arbiscan.io', gas: 'ETH' }
 ] as const;