🐛 Fixed several I/O issues

[marcelwa]

Some filenames would get lost when writing layouts or networks. Also, printed ASCII layouts would look weird. Both have been fixed.

[codecov]

Codecov Report

Merging #111 (d6f82fb) into main (fe7b92a) will increase coverage by 0.07%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #111      +/-   ##
==========================================
+ Coverage   93.82%   93.89%   +0.07%     
==========================================
  Files          75       75              
  Lines        6926     6928       +2     
==========================================
+ Hits         6498     6505       +7     
+ Misses        428      423       -5     

Impacted Files	Coverage Δ
include/fiction/io/print_layout.hpp	93.45% <100.00%> (+0.12%)	⬆️
.../algorithms/physical_design/one_pass_synthesis.hpp	90.27% <0.00%> (+1.73%)	⬆️

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[github-actions]

clang-tidy review says "All clean, LGTM! 👍"

[github-actions]

clang-tidy review says "All clean, LGTM! 👍"

[github-actions]

clang-tidy review says "All clean, LGTM! 👍"