Hyperlink support

[meain]

Fixes #192 . There is still some more code cleanup left, but thought I would push the what I had so far.

Thanks to @KSXGitHub for the original implementation in #354.

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TODO

• Use cargo fmt
• Add necessary tests
• Add changelog entry
• Update default config/theme in README (if applicable)
• Update man page at lsd/doc/lsd.md (if applicable)

[codecov-commenter]

Codecov Report

Merging #642 (4fd803f) into master (7e49ca7) will increase coverage by 0.08%.
The diff coverage is 86.27%.

@@            Coverage Diff             @@
##           master     #642      +/-   ##
==========================================
+ Coverage   86.43%   86.52%   +0.08%     
==========================================
  Files          39       40       +1     
  Lines        4240     4372     +132     
==========================================
+ Hits         3665     3783     +118     
- Misses        575      589      +14     

Impacted Files	Coverage Δ
src/core.rs	0.00% <0.00%> (ø)
src/main.rs	7.69% <ø> (ø)
src/meta/mod.rs	41.40% <0.00%> (+0.32%)	⬆️
src/meta/name.rs	90.56% <78.00%> (-2.33%)	⬇️
src/display.rs	76.11% <88.46%> (+1.31%)	⬆️
src/flags/hyperlink.rs	98.52% <98.52%> (ø)
src/app.rs	74.62% <100.00%> (+0.38%)	⬆️
src/config_file.rs	70.00% <100.00%> (+0.33%)	⬆️
src/flags.rs	100.00% <100.00%> (ø)
src/meta/inode.rs	62.50% <0.00%> (-6.25%)	⬇️
... and 4 more

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[meain]

I have some cleanup left in this, but have been a bit busy the past few weeks. Hope to compete this soon.

[meain]

This should be good to go now, there is some possible flags rework we could do, but I think I'll take that up later once I have a concrete idea. https://github.com/Peltoche/lsd/blob/ca5d9b3e160b0d9e6e1f1d2717e9df7cc51814e4/src/core.rs#L56