table-cache: remove getFirstLevelCache from table

[lavrukov]

No description provided.

[nvamelichev]

• Checkstyle error

/home/runner/work/yoj-project/yoj-project/repository/src/main/java/tech/ydb/yoj/repository/db/TableUtils.java:20:20: Use a single space to separate non-whitespace characters. [SingleSpaceSeparator]

• TableUtils class: I have some minor suggestions
  • functionality: Currently this class feels like an orphan. We probably should move some common functionality from InMemoryTable/YdbTable there (e.g. working with first-level cache and projection cache for basic entity find(ID), save/insert(ID), delete(ID)). We can do this in a separate PR, or course.
  • naming: YOJ generally does not use the XxxUtils convention (except for some classes like YqlUtils that were ultimately deleted). Maybe [Common]TableQueries or something like this (Guava-style, in plural)?
  • @UtilityClass Lombok annotation is non-intuitive: it makes instance methods static, I think we shouldn't use it. Making the class final and adding an empty private constructor does not take a lot of boilerplate. (And YOJ was migrated from @UtilityClass when open-sourcing it).

[nvamelichev]

^^^