improve(core): vertices and edges loading optimization

### Feature Description (功能描述)

`ComputerOptions.INPUT_FILTER_CLASS` default value is `DefaultInputFilter`.
`org.apache.hugegraph.computer.core.input.filter.DefaultInputFilter`
```java
public class DefaultInputFilter implements InputFilter {

@Override
public Vertex filter(Vertex vertex) {
vertex.properties().clear();
return vertex;
}

@Override
public Edge filter(Edge edge) {
edge.properties().clear();
return edge;
}
}
```
Load all properties first, then clear.

Could we specify some properties when loading vertices or edges? May could improve performance.
Just like mysql:
```sql
select a, b, c
```
instead of
```sql
select *
```

`org.apache.hugegraph.computer.core.input.hg.HugeVertexFetcher`
```java
@Override
public Iterator fetch(InputSplit split) {
Shard shard = toShard(split);
return this.client().traverser().iteratorVertices(shard,
this.pageSize());
}
```
But it seems that the traverser api does not yet support specifying some properties to load vertices or edges on the server side.