Split parquet test into multiple files

[etseidl]

Description

Compiling the parquet C++ tests takes a long time. This work attempts to address this by splitting the (mostly) monolithic parquet_test.cpp into multiple compilation units. On my workstation (10 core i7) I was able to reduce the compile time for PARQUET_TEST from 48s down to 23s.

This PR also splits the testing base_fixture.hpp file into three parts to cut down on unnecessary rmm includes. This change resulted in a time savings of around 20% when compiling the entire test suite locally.

Checklist

• I am familiar with the Contributing Guidelines.
• New or existing tests cover these changes.
• The documentation is up to date with these changes.

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[etseidl]

Latest changes get the compile time down to 19s.

[vuule]

/ok to test

[etseidl]

A bit of scope creep...while trying to figure out where compile time was going, I found that including base_fixture.hpp actually added a significant chunk of time. I split that file into two, moving parts associated with defining main to a new file testing_main.hpp. This reduced the overall compile time for the full test suite from around 10.5 min to just over 7.5 min.

[vuule]

/ok to test

[vuule]

I'll measure the build time locally (tomorrow) to help confirm that this change does reduce the total build time.

[vuule]

/ok to test

[vuule]

The new quote_normalization_test file needs to be updated, got an error building locally.

[davidwendt]

/ok to test

[vuule]

/ok to test

[vuule]

90 files. 8K lines. All solid :D

[vuule]

/merge