Cowswap protocol parser (#40)

* Initial commit

* feat: implement Cowswap protocol parser and add transaction handling

* feat: add Cowswap protocol support with transaction parsing and event handling

* feat: update recipient address parsing in Cowswap protocol and adjust test data

* feat: update identifier and name for Oneinch protocol in configuration

* feat: remove Oneinch protocol support and related files

* feat: improve token address handling and recipient parsing in Cowswap protocol

* feat: update Cowswap tests to parse v2 transactions and remove Oneinch protocol tests

---------

Co-authored-by: “Subham-Satapathy” <“subhamsatapathy515@gmail.com”>

src/config/protocols.ts

@@ -56,5 +56,12 @@ export const protocols: IProtocolDefinitionMap = {
     twitter: "https://x.com/PancakeSwap",
     logo: "https://storage-mercle-prod.s3.amazonaws.com/public/protocol-logos/pancakeswap.png",
     website: "https://pancakeswap.finance/",
-  }
+  },
+  cowswap: {
+    identifier: "cowswap",
+    name: "Cowswap",
+    twitter: "https://x.com/CoWSwap",
+    logo: "https://storage-mercle-prod.s3.amazonaws.com/public/protocol-logos/cowswap.png",
+    website: "https://swap.cow.fi/",
+  },
 };