Allow create table/table functions/dictionaries with subset

Why it matters

This feature allows users to define tables, table functions, and dictionaries in Ytsaurus with only a subset of columns, improving flexibility and efficiency when working with large or complex schemas, by avoiding the need to specify or process all columns.

How to use it

When creating tables, table functions, or dictionaries in Ytsaurus, specify only the required subset of columns instead of the full schema to create lightweight and focused objects.