Insert data with dynamic columns

I'm writing a kafka consumer, it consumes message and insert those message into clickhouse according to message's meta info, like:
```json
{
"table": "ch_table_1",
"data": [
{"col_name": "foo", "type": "uint32", "val": "3"},
{"col_name": "bar", "type": "string", "val": "hello"}
//...
]
}
```
How do I construct the Row to insert? Didn't find any docs about this

No file or test is named. Start by reading the existing Row and insertion APIs in this Rust client, then trace how table and column metadata are handled. Done means establishing whether dynamic columns are supported and documenting or defining the supported insertion path for the shown Kafka message shape.

Written by the indexing model from the issue text.