create and configure liquidswap adapter (DefiLlama#3557)

* create and configure liquidswap adapter

* use output volumes for consistency with other aggregators

* refactor codes

---------

Co-authored-by: Eden <noat.eth@gmail.com>

Author: lordshisho

aggregators/liquidswap/index.ts

@@ -0,0 +1,39 @@
+import {
+    FetchOptions,
+    FetchResultVolume,
+    SimpleAdapter,
+} from "../../adapters/types";
+import { CHAIN } from "../../helpers/chains";
+
+const SwapExecutedEvent =
+    "event SwapExecuted(address indexed sender, address input_token_address, uint256 input_token_amount, address output_token_address, uint256 output_token_amount, uint256 timestamp)"
+
+const LIQUIDSWAP_ADDRESS = "0x744489ee3d540777a66f2cf297479745e0852f7a"
+
+const fetch: any = async (options: FetchOptions): Promise<FetchResultVolume> => {
+    const dailyVolume = options.createBalances()
+
+    const logs = await options.getLogs({ target: LIQUIDSWAP_ADDRESS, eventAbi: SwapExecutedEvent })
+    logs.forEach((log) => {
+        dailyVolume.add(log.input_token_address, log.input_token_amount)
+    })
+
+    return { dailyVolume }
+};
+
+const adapter: SimpleAdapter = {
+    version: 2,
+    adapter: {
+        [CHAIN.HYPERLIQUID]: {
+            fetch: fetch,
+            start: "2025-04-02",
+            meta: {
+                methodology: {
+                    Volume: "Volume is calculated from SwapExecuted events emitted by the LiquidSwap aggregator contract.",
+                },
+            },
+        },
+    },
+}
+
+export default adapter