feat(abigen): support event id in filter (#12697)

support abigen with xxxEventID() in Filter. After this pr the abigen
will generate one more method with each event of Filter:


```go
func (_ERC20 *ERC20Filterer) TransferEventID() libcommon.Hash {
 return libcommon.HexToHash("0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef")
}
```

accounts/abi/bind/template.go

@@ -530,6 +530,10 @@ var (
 			Raw types.Log // Blockchain specific contextual infos
 		}
 
+		func (_{{$contract.Type}} *{{$contract.Type}}Filterer) {{.Normalized.Name}}EventID() libcommon.Hash {
+   			return libcommon.HexToHash("0x{{printf "%x" .Original.ID}}")
+  		}
+
 		// Filter{{.Normalized.Name}} is a free log retrieval operation binding the contract event 0x{{printf "%x" .Original.ID}}.
 		//
 		// Solidity: {{.Original.String}}