Add IP and Mac user defined literals.

[Dimi1010]

Split of #1507.

This PR adds user defined literals for MacAddress, IPv4Address and IPv6Address in the form of _mac, _ipv4, _ipv6 to allow quick construction. It also fixes the const correctness of MacAddress static values.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.41%. Comparing base (0ae5389) to head (300ca2b).
⚠️ Report is 2 commits behind head on dev.

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #1999      +/-   ##
==========================================
- Coverage   83.41%   83.41%   -0.01%     
==========================================
  Files         311      311              
  Lines       55027    55023       -4     
  Branches    11777    12114     +337     
==========================================
- Hits        45900    45896       -4     
- Misses       7869     8234     +365     
+ Partials     1258      893     -365     

Flag	Coverage Δ
alpine320	75.89% <ø> (ø)
fedora42	75.81% <ø> (-0.02%)	⬇️
macos-14	81.50% <100.00%> (ø)
macos-15	81.51% <100.00%> (ø)
mingw32	70.55% <ø> (-0.02%)	⬇️
mingw64	70.53% <ø> (+0.11%)	⬆️
npcap	?
rhel94	75.83% <ø> (ø)
ubuntu2004	60.13% <ø> (-0.03%)	⬇️
ubuntu2004-zstd	60.25% <ø> (+<0.01%)	⬆️
ubuntu2204	75.77% <ø> (-0.03%)	⬇️
ubuntu2204-icpx	60.55% <ø> (ø)
ubuntu2404	75.88% <ø> (-0.01%)	⬇️
ubuntu2404-arm64	75.54% <ø> (-0.03%)	⬇️
unittest	83.41% <100.00%> (-0.01%)	⬇️
windows-2022	85.42% <100.00%> (+0.16%)	⬆️
windows-2025	85.45% <100.00%> (+0.11%)	⬆️
winpcap	85.45% <100.00%> (-0.09%)	⬇️
xdp	53.55% <ø> (ø)

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