STRAT-5398 | Klaviyo(Actions) |Allow user to configure event name and product event name in OrderCompleted Action.

[Innovative-GauravKochar]

This Pull request is to allow user to configure Event Name and Product Event Name in OrderCompleted Actions.
Jira ticket:- https://segment.atlassian.net/jira/software/c/projects/STRATCONN/boards/310?assignee=63617339fc0cc7a600b03c6b&selectedIssue=STRATCONN-5398

Tested it in Staging Environment.

Testing

Include any additional information about the testing you have completed to
ensure your changes behave as expected. For a speedy review, please check
any of the tasks you completed below during your testing.

• Added unit tests for new functionality
• Tested end-to-end using the local server
• [If destination is already live] Tested for backward compatibility of destination. Note: New required fields are a breaking change.
• [Segmenters] Tested in the staging environment
• [Segmenters] [If applicable for this change] Tested for regression with Hadron.

[varadarajan-tw]

Nice work! Left a question.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.

Project coverage is 78.45%. Comparing base (52537f3) to head (95ab8da).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
...s/src/destinations/klaviyo/orderCompleted/index.ts	0.00%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2704      +/-   ##
==========================================
- Coverage   78.46%   78.45%   -0.01%     
==========================================
  Files        1036     1036              
  Lines       18771    18773       +2     
  Branches     3561     3563       +2     
==========================================
  Hits        14729    14729              
  Misses       2844     2844              
- Partials     1198     1200       +2     

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