[Request]: List all notarization objects function for ReadOnlyClient

### Feature description

`NotarizationClientReadOnly` should provide a function that lists all objects owned by a specific owner address.

The client can use the grapql API to query the objects:

```graphql
query {
objects(filter: {
type: "0x00412bd469b7f980227c6c574090348239852e43aa07818b315854fdd8a2d25f::notarization::Notarization>",
owner: "0xedf54b56a2c28938daadb68b87a517784e9830dd348c24897b3bbb900da8d667"
}) {
edges {
node {
address
}
}
}
}
```

### Motivation

Facilitate managing already created notarizations.

### Requirements

-

### Open questions

Which fields of the found objects should be displayed? Only the objectId, versionCnt, lastStateChange, ...

### Are you planning to do it yourself in a pull request?

Yes