pubsub: Add SNS publish API

[roseyang62]

Summary

• Added support for publishing messages to AWS SNS topics

Some conventions to follow

1. add the module name as a prefix
   • for example: add a prefix: docstore: for document store module, blobstore for Blob Store module
2. for a test only PR, add test:
3. for a perf improvement only PR, add perf:
4. for a refactoring only PR, add "refactor:"

[codecov-commenter]

Codecov Report

❌ Patch coverage is 89.41176% with 18 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.35%. Comparing base (9066147) to head (7f0048f).
⚠️ Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
...om/salesforce/multicloudj/pubsub/aws/AwsTopic.java	86.95%	8 Missing and 10 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #226      +/-   ##
============================================
+ Coverage     83.19%   83.35%   +0.15%     
  Complexity       94       94              
============================================
  Files           150      151       +1     
  Lines          8195     8393     +198     
  Branches        952      993      +41     
============================================
+ Hits           6818     6996     +178     
- Misses          926      938      +12     
- Partials        451      459       +8     

Flag	Coverage Δ
unittests	83.35% <89.41%> (+0.15%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 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.

[sandeepvinayak]

this doesn't look ideal, the end user will have to use SQS and SNS ? these are very aws specific.
we should have some cloud agnostic terms

[roseyang62]

I’ve updated the builder to infer whether to use SNS or SQS based on the provided topic name (ARN or queue name/URL)

So end users no longer need to explicitly choose AWS specific service types.