[Feature request] ListData selection management convenience methods

### Provide a general summary of the feature here

I'd like equivalents of `add` and `remove` methods for selection.

### 😯 Current Behavior

Manual implementation like
```ts
let nextSelected = new Set(list.selectedKeys);
if (list.selectedKeys === "all") {
  nextSelected = new Set(initialItems.map((metric) => metric.id));
}
nextSelected.delete(metric.id);
list.setSelectedKeys(nextSelected);
```
