Move Row Filter tests to a separate module

[sdf-jkl]

Which issue does this PR close?

• Part of Split up Parquet reader tests #9269.

Rationale for this change

Check issue

What changes are included in this PR?

Moved tests created in #8733 to a separate module -> parquet/tests/arrow_reader/row_filter.rs

Are these changes tested?

No need, code movement.

Are there any user-facing changes?

No, code movement.

[sdf-jkl]

@alamb ready for review.

[sdf-jkl]

I am also thinking about doing the same to the async tests.

An idea I have is to create a folder for each topic(i.e. row_filter/) and have mod.rs, sync.rs and async.rs inside to split the dependencies.

[alamb]

An idea I have is to create a folder for each topic(i.e. row_filter/) and have mod.rs, sync.rs and async.rs inside to split the dependencies.

That sounds like a good idea to me

[alamb]

Thank you @sdf-jkl -- since this is just code movement I will merge it quickly to keep the code flowing