feat: add base (#162)

# Description

Add Base network support

# Changes

- [x] Bump cow-sdk version

## How to test

1. Use the following config:
```
{
  "networks": [
    {
      "name": "base",
      "rpc": "<set a base rpc here>",
      "deploymentBlock": 21794150,
      "processEveryNumBlocks": 5,
      "pageSize": 5000,
      "filterPolicy": {
        "defaultAction": "ACCEPT",
        "conditionalOrderIds": {},
        "transactions": {},
        "handlers": {},
        "owners": {}
      }
    }
  ]
}
```

2. Run it with `yarn cli`
* Should start and process blocks accordingly

![image](https://github.com/user-attachments/assets/4437453a-a2ad-403c-88db-ea100baa3b6a)


Note: Not yet able to place TWAP orders, so can't be fully tested yet

README.md

@@ -8,7 +8,7 @@ The [programmatic order](https://docs.cow.fi/cow-protocol/concepts/order-types/p
 
 If running your own watch-tower instance, you will need the following:
 
-- An RPC node connected to the Ethereum mainnet, Arbitrum One, Gnosis Chain, or Sepolia.
+- An RPC node connected to the Ethereum mainnet, Arbitrum One, Gnosis Chain, Base, or Sepolia.
 - Internet access to the [CoW Protocol `OrderBook` API](https://docs.cow.fi/cow-protocol/reference/apis/orderbook).
 
 **CAUTION**: Conditional order types may consume considerable RPC calls.
@@ -17,7 +17,6 @@ If running your own watch-tower instance, you will need the following:
 
 **NOTE**: The `pageSize` option is used to specify the number of blocks to fetch from the blockchain when querying historical events (`eth_getLogs`). The default is `5000`, which is the maximum number of blocks that can be fetched in a single request from Infura. If you are running the watch-tower against your own RPC, you may want to set this to `0` to fetch all blocks in one request, as opposed to paging requests.
 
-
 ### Docker
 
 The preferred method of deployment is using `docker`. The watch-tower is available as a docker image on [GitHub](https://github.com/cowprotocol/watch-tower/pkgs/container/watch-tower). The tags available are:

package.json

@@ -46,7 +46,7 @@
   "dependencies": {
     "@commander-js/extra-typings": "^11.0.0",
     "@cowprotocol/contracts": "^1.4.0",
-    "@cowprotocol/cow-sdk": "^5.3.0",
+    "@cowprotocol/cow-sdk": "^5.7.1",
     "ajv": "^8.12.0",
     "ajv-formats": "^2.1.1",
     "chalk": "^4.1.2",

yarn.lock

@@ -481,10 +481,10 @@
   resolved "https://registry.yarnpkg.com/@cowprotocol/contracts/-/contracts-1.6.0.tgz#d0fc83ed8c624b968d1a68bb5c74712c11ec81e0"
   integrity sha512-+UKhYRzkvnqqviBru5D3btTLYc743n0O5YTG+wpYwGl4fb7VNKBkFHe28C5Mf1DF/kOfmqfu+0IAvX9Vuq5Dqw==
 
-"@cowprotocol/cow-sdk@^5.3.0":
-  version "5.3.0"
-  resolved "https://registry.yarnpkg.com/@cowprotocol/cow-sdk/-/cow-sdk-5.3.0.tgz#3330a43134d6a15453afb22dd1f490738089e591"
-  integrity sha512-gH53emDVsHkO9sGb8rxqx5RLNBmH1ABrum4bSxRorT3eXWviJy5kYUlucCSUIk5uMCbcJnyvsnHBZptGiMCVAA==
+"@cowprotocol/cow-sdk@^5.7.1":
+  version "5.7.1"
+  resolved "https://registry.yarnpkg.com/@cowprotocol/cow-sdk/-/cow-sdk-5.7.1.tgz#22b556b79c949a3c5a65ee87f188a477f29d76eb"
+  integrity sha512-1SKzf6hqLEUP3if+Ki6eweSWcUA7hDyFcmUW2tf6a0XROwl9ktNHWP7dJ09zMrnFn6k03DqoYvKun1i+WS1D7Q==
   dependencies:
     "@cowprotocol/contracts" "^1.6.0"
     "@ethersproject/abstract-signer" "^5.7.0"