feat: per msg nack option wiring for source and isb

[vaibhavtiwari33]

What this PR does / why we need it

• Introduce per message nack options
• Wire the options into source and ISB

Related issues

Fixes #3112
Fixes #3113

Testing

• Pending unit tests

[codecov]

Codecov Report

❌ Patch coverage is 65.02732% with 64 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.64%. Comparing base (38f3306) to head (f18c3c3).

Files with missing lines	Patch %	Lines
rust/numaflow-core/src/message.rs	60.34%	23 Missing ⚠️
rust/numaflow-core/src/pipeline/isb/reader.rs	60.00%	6 Missing ⚠️
rust/numaflow-core/src/source/generator.rs	16.66%	5 Missing ⚠️
rust/numaflow-core/src/source/kafka.rs	16.66%	5 Missing ⚠️
rust/numaflow-core/src/source/nats.rs	16.66%	5 Missing ⚠️
rust/numaflow-core/src/source/pulsar.rs	16.66%	5 Missing ⚠️
rust/numaflow-core/src/source/sqs.rs	16.66%	5 Missing ⚠️
rust/numaflow-core/src/pipeline/isb/writer.rs	72.72%	3 Missing ⚠️
rust/numaflow-core/src/mapper/map.rs	81.81%	2 Missing ⚠️
rust/numaflow-core/src/monovertex/bypass_router.rs	66.66%	1 Missing ⚠️
... and 4 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3455      +/-   ##
==========================================
+ Coverage   82.55%   82.64%   +0.09%     
==========================================
  Files         307      307              
  Lines       77618    77686      +68     
==========================================
+ Hits        64077    64207     +130     
+ Misses      12984    12919      -65     
- Partials      557      560       +3     

☔ View full report in Codecov by Harness.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.