Update what data is returned by `/api/delegates/top`

Currently, a request to `/api/delegates/top`, for instance
```
GET http://localhost:3000/api/delegates/top?space=gnosis.eth&limit=100
```
returns
```
{
"delegates": [
[
"0x7ef021f62E3E7975FBC21d3202C5A1F19D53bB47",
"3856606662913366179"
],
[
"0x6cc5b30Cd0A93C1F85C7868f5F2620AB8c458190",
"16390578317381805817"
],
[
"0xDE1e8A7E184Babd9F0E3af18f40634e9Ed6F0905",
"12533971654468439638"
]
],
"updateTime": 1683028849
}
```

Instead, it should return something like this:
```
{
"delegates": [
{
"address": "0x7ef021f62E3E7975FBC21d3202C5A1F19D53bB47",
"delegatedVoteWeight": 3856606662913366179,
"numberOfDelegates": 3
}
...
],
"updateTime": 1683028849
}
```

Start at the handler or entry point for GET /api/delegates/top and trace how its delegate results are assembled. Change the response to return delegate objects with address, delegatedVoteWeight, and numberOfDelegates, while preserving updateTime; verify the endpoint response matches the requested shape.

Written by the indexing model from the issue text.