feat: support open_with_operator

[ZENOTME]

I try to using Table in RisingWave and find that use uri to create table is not convinient.

For example, load a table using s3, we get the config like

struct config {
    path: &str,
    access_key: &str,
    endpoint: &str
}

If we only support to create table using uri, we need to serialize the config into uri and deserialize in icelake.

So in this case, may be having a open_with_operator is better.

How do you think? @liurenjie1024 @Xuanwo

[liurenjie1024]

LGTM