fix: ensure we canonicalize manifest directory in-case it's a symlink

[rawkode]

This is a problem because we attempt to "strip" the manifest directory as a prefix during some file.* operations and this fails when the path hasn't been resolved / canonicalized properly

Closes #146

[codecov-commenter]

Codecov Report

Merging #156 (747a08d) into main (802ae58) will increase coverage by 3.53%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #156      +/-   ##
==========================================
+ Coverage   48.07%   51.60%   +3.53%     
==========================================
  Files          49       49              
  Lines        1924     1804     -120     
==========================================
+ Hits          925      931       +6     
+ Misses        999      873     -126     

Impacted Files	Coverage Δ
src/main.rs	0.00% <0.00%> (ø)
src/actions/directory/mod.rs	0.00% <0.00%> (ø)
src/actions/package/providers/yay.rs	0.00% <0.00%> (ø)
src/actions/package/providers/pkgin.rs	0.00% <0.00%> (ø)
src/actions/package/providers/bsdpkg.rs	0.00% <0.00%> (ø)
src/actions/package/providers/winget.rs	0.00% <0.00%> (ø)
src/actions/package/providers/homebrew.rs	0.00% <0.00%> (ø)
src/contexts/os.rs	96.42% <0.00%> (+0.13%)	⬆️
src/actions/file/copy.rs	14.06% <0.00%> (+0.42%)	⬆️
src/contexts/mod.rs	84.05% <0.00%> (+0.47%)	⬆️
... and 22 more

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[icepuma]

Just some clippy warnings, the rest looks good!