added doc comments to builder properties where their were missing

[milyin]

Minor documentation updates
Fixes #2235

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Labels: documentation

📚 Documentation Update Requirements

Since this PR updates documentation:

• Accuracy verified - Technical details are correct
• Examples tested - Code examples actually work
• Links valid - All links work and point to correct versions
• Grammar/spelling - Text is clear and well-written
• Formatting correct - Markdown/formatting renders properly
• Up-to-date - Reflects current codebase state

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 72.60%. Comparing base (44844ba) to head (57437bf).
⚠️ Report is 4 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2234      +/-   ##
==========================================
+ Coverage   72.46%   72.60%   +0.13%     
==========================================
  Files         390      390              
  Lines       63360    63366       +6     
==========================================
+ Hits        45911    46004      +93     
+ Misses      17449    17362      -87     

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[Copilot]

Pull request overview

This PR updates rustdoc comments across Zenoh’s Rust API/builders to improve clarity and correct/avoid misleading documentation around QoS and attachments (including the concern raised in #2235).

Changes:

• Refines rustdoc for QoS-related getters/setters (priority, congestion control, express) across multiple builders.
• Updates attachment/source_info/timestamp builder docs and Sample accessors to be less misleading.
• Adds/adjusts high-level docs for Publisher.

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 12 comments.

Show a summary per file

File	Description
zenoh/src/api/sample.rs	Updates rustdoc for QoS getters and attachment accessors on Sample.
zenoh/src/api/querier.rs	Tweaks rustdoc for QoS getters on Querier.
zenoh/src/api/publisher.rs	Adds clarifying rustdoc on how Publisher is declared.
zenoh/src/api/builders/sample.rs	Adds/updates rustdoc on builder traits and implementations (QoS/timestamp/source_info/attachment/encoding).
zenoh/src/api/builders/reply.rs	Adds/updates rustdoc for reply builder timestamp/attachment/source_info/encoding/QoS.
zenoh/src/api/builders/query.rs	Adds/updates rustdoc for SessionGetBuilder sample/QoS/encoding-related builder methods.
zenoh/src/api/builders/querier.rs	Adds/updates rustdoc for querier builders (QoS + get builder sample/encoding methods).
zenoh/src/api/builders/publisher.rs	Minor rustdoc tweak for priority setter wording.
zenoh-ext/src/advanced_publisher.rs	Adds/updates rustdoc for advanced publisher/publication builders (encoding/QoS/sample/timestamp).
zenoh-ext/src/advanced_cache.rs	Adds/updates rustdoc for RepliesConfig QoS builder methods.

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