feat(parser): add AppSync Events models

[leandrodamascena]

Issue number: #6648

Summary

Changes

This PR introduces a new parser model called AppSyncEventsModel to help customers when working with AppSync Events integration with Lambda.

User experience

from aws_lambda_powertools.utilities.parser import event_parser
from aws_lambda_powertools.utilities.parser.models import AppSyncEventsModel

@event_parser(model=AppSyncEventsModel)
def lambda_handler(event: AppSyncEventsModel, context):
    return {"statusCode": 200, "body": f"Hello {event.events}"}

Checklist

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• Meet tenets criteria
• I have performed a self-review of this change
• Changes have been tested
• Changes are documented
• PR title follows conventional commit semantics

Is this a breaking change?

RFC issue number:

Checklist:

• Migration process documented
• Implement warnings (if it can live side by side)

Acknowledgment

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.25%. Comparing base (9978a6c) to head (7248006).
Report is 3 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #6999   +/-   ##
========================================
  Coverage    96.25%   96.25%           
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  Files          274      275    +1     
  Lines        12860    12884   +24     
  Branches       950      950           
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+ Hits         12378    12402   +24     
  Misses         377      377           
  Partials       105      105           

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud