Lamda: Attack wave detection & proxy event v2

[timokoessler]

Summary by Aikido

Security Issues: 0	Quality Issues: 0	Resolved Issues: 0

⚡ Enhancements

• Integrated attack-wave detection and triggered agent.onDetectedAttackWave callback.

🔧 Refactors

• Extracted API Gateway parsing into new lambda/gateway.ts module.
• Replaced inline JSON/cookie parsing with shared tryParseJSON and cookie parser.

^{More info}

[codecov]

Codecov Report

❌ Patch coverage is 92.85714% with 13 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
library/sources/lambda/gateway.ts	91.71%	12 Missing and 1 partial ⚠️

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