Added support of StoreType and not null columns

[alex268]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 50.00000% with 10 lines in your changes missing coverage. Please review.

Project coverage is 58.60%. Comparing base (446bd2d) to head (a80c8a6).

Files with missing lines	Patch %	Lines
...src/main/java/tech/ydb/table/impl/BaseSession.java	33.33%	6 Missing and 2 partials ⚠️
...a/tech/ydb/table/description/TableDescription.java	75.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master     #374   +/-   ##
=========================================
  Coverage     58.59%   58.60%           
- Complexity     2125     2127    +2     
=========================================
  Files           312      312           
  Lines         12712    12732   +20     
  Branches       1252     1255    +3     
=========================================
+ Hits           7449     7461   +12     
- Misses         4663     4669    +6     
- Partials        600      602    +2     

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