Add Option type packet_id() support for Publish packet builder.

[redboltz]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 90.89%. Comparing base (2a7c7e5) to head (eaa9036).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/mqtt/packet/packet_id.rs	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #53      +/-   ##
==========================================
- Coverage   90.90%   90.89%   -0.01%     
==========================================
  Files          55       55              
  Lines        7456     7460       +4     
==========================================
+ Hits         6778     6781       +3     
- Misses        678      679       +1     

Files with missing lines	Coverage Δ
src/mqtt/packet/v3_1_1/publish.rs	95.74% <100.00%> (ø)
src/mqtt/packet/v5_0/publish.rs	94.48% <100.00%> (ø)
src/mqtt/packet/packet_id.rs	81.25% <75.00%> (-2.09%)	⬇️

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[smaeul]

Thanks! This works perfectly for me.