fix(aws): support SQS AwsJson1.0 requests

[EfeDurmaz16]

Summary

Adds AwsJson1.0 request handling for the SQS emulator while preserving the existing form-urlencoded AWS Query protocol path. Current @aws-sdk/client-sqs clients send Content-Type: application/x-amz-json-1.0 and X-Amz-Target: AmazonSQS.<Action>, so the emulator now dispatches those requests and returns JSON protocol responses instead of XML errors.

Details

• Detects SQS AwsJson1.0 requests by protocol headers.
• Normalizes JSON request payloads into the existing SQS action handlers.
• Returns JSON envelopes for CreateQueue, ListQueues, GetQueueUrl, GetQueueAttributes, SendMessage, ReceiveMessage, DeleteMessage, PurgeQueue, and DeleteQueue.
• Keeps legacy Action= form requests and XML responses unchanged.
• Updates AWS docs and the AWS skill to describe both SQS protocols.

Closes #95.

Validation

• pnpm --filter @emulators/aws test
• pnpm --filter @emulators/aws type-check
• pnpm --filter @emulators/aws lint
• pnpm --filter @emulators/aws build
• pnpm exec prettier --check packages/@emulators/aws/src/routes/sqs.ts packages/@emulators/aws/src/__tests__/aws.test.ts

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