feat: add package to set and verify correlation/reply ids for RequestReply

[Cali0707]

For the RequestReply resource to securely figure out that a new event is a reply to an earlier event it saw, it needs to encrypt the event id and set that in a correlation id attribute. For the reply event, that correlation id attribute will have been copied into the reply id attribute.

This PR adds helper functions to set and verify these IDs, to be consumed in various places later as the RequestReply implementation continues.

Proposed Changes

• Add function to set correlation id
• Add function to verify that a reply id is from this RequestReply resource

[Cali0707]

/cc @matzew @dsimansk

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 58.62069% with 24 lines in your changes missing coverage. Please review.

Project coverage is 52.29%. Comparing base (d56ee68) to head (ab4e829). Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/requestreply/correlation_id.go	58.62%	16 Missing and 8 partials :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8606      +/-   ##
==========================================
+ Coverage   52.28%   52.29%   +0.01%     
==========================================
  Files         397      398       +1     
  Lines       24978    25036      +58     
==========================================
+ Hits        13059    13093      +34     
- Misses      11127    11143      +16     
- Partials      792      800       +8     

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[knative-prow[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Cali0707, matzew

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