fix: linting at flux_table.py

[youarecode]

Closes #674

Proposed Changes

class FluxTable(FluxStructure):
    def __init__(self) -> None:
        self.columns: List[FluxColumn] = [] #<<<<---- Added this typing
        self.records: List[FluxRecord] = []    #<<<<---- Added this typing

Testing found the following warnings:

1. duplicated import

#setup.py
from pathlib import Path
from pathlib import Path #<<<<-------------deleted duplicated

NOTE

There's still unrelated tests that are not passing
make lint

Checklist

• CHANGELOG.md updated
• Rebased/mergeable
• A test has been added if appropriate
• pytest tests completes successfully
• Commit messages are conventional
• Sign CLA (if not already signed)

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.47%. Comparing base (3d70dbd) to head (fabc9da).
Report is 1 commits behind head on master.

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Additional details and impacted files

@@           Coverage Diff           @@
##           master     #677   +/-   ##
=======================================
  Coverage   90.47%   90.47%           
=======================================
  Files          40       40           
  Lines        3528     3528           
=======================================
  Hits         3192     3192           
  Misses        336      336           

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[bednar]

@youarecode thanks for your PR 👍

LGTM 🚀