fix(strings): replace unicode whitespace for correct rendering

[orhun]

Description of change

Unicode whitespaces were causing issues while rendering strings.

fixes #9

How has this been tested? (if applicable)

Locally.

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 0% with 9 lines in your changes missing coverage. Please review.

Project coverage is 3.65%. Comparing base (52192df) to head (262acf4).

Files with missing lines	Patch %	Lines
src/tui/ui.rs	0.00%	9 Missing ⚠️

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Additional details and impacted files

@@           Coverage Diff            @@
##            main     #28      +/-   ##
========================================
- Coverage   3.67%   3.65%   -0.01%     
========================================
  Files         18      18              
  Lines       2212    2220       +8     
========================================
  Hits          81      81              
- Misses      2131    2139       +8     

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