add exsat chains definitions

Author: pursonc

src/chains/definitions/exSat.ts

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+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const eos = /*#__PURE__*/ defineChain({
+  id: 7200,
+  name: 'exSat Network',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'BTC',
+    symbol: 'BTC',
+  },
+  rpcUrls: {
+    default: { http: ['https://evm.exsat.network'] },
+  },
+  blockExplorers: {
+    default: {
+      name: 'exSat Explorer',
+      url: 'https://scan.exsat.network',
+      apiUrl: 'https://scan.exsat.network/api',
+    },
+  }
+})

src/chains/definitions/exSatTestnet.ts

@@ -0,0 +1,21 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const eos = /*#__PURE__*/ defineChain({
+  id: 839999,
+  name: 'exSat Testnet',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'BTC',
+    symbol: 'BTC',
+  },
+  rpcUrls: {
+    default: { http: ['https://evm-tst3.exsat.network'] },
+  },
+  blockExplorers: {
+    default: {
+      name: 'exSat Explorer',
+      url: 'https://scan-testnet.exsat.network',
+      apiUrl: 'https://scan-testnet.exsat.network/api',
+    },
+  }
+})