add trimming to csv reader in main csv reader function

[Aurashk]

Description

Makes the csv reader able to handle files where the entries have leading/trailing whitespace

Fixes #648

Type of change

• Bug fix (non-breaking change to fix an issue)
• New feature (non-breaking change to add functionality)
• Refactoring (non-breaking, non-functional change to improve maintainability)
• Optimization (non-breaking change to speed up the code)
• Breaking change (whatever its nature)
• Documentation (improve or add documentation)

Key checklist

• All tests pass: $ cargo test
• The documentation builds and looks OK: $ cargo doc

Further checks

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.13%. Comparing base (a66a0f7) to head (48e525c).
⚠️ Report is 15 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #976      +/-   ##
==========================================
+ Coverage   84.09%   84.13%   +0.04%     
==========================================
  Files          50       50              
  Lines        5683     5699      +16     
  Branches     5683     5699      +16     
==========================================
+ Hits         4779     4795      +16     
  Misses        671      671              
  Partials      233      233              

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[tsmbland]

Nice!