feat(nestjs-signed-url): add s3 signed url provider

[TorinAsakura]

Task

• Close [Feature] Add S3 and R2 signed URL provider #385

How to verify

Main scenario

1. Context: @atls/nestjs-signed-url package validation for S3-compatible signed URLs.
   Action: Run cd packages/nestjs-signed-url && yarn test unit --test-reporter=tap with Node 22.22.3.
   Expected result: The package unit suite passes, including S3 gateway and module coverage.

Additional scenario

1. Context: repository validation after adding the S3 signing provider.
   Action: Run yarn check with Node 22.22.3.
   Expected result: The repository check completes successfully.

Proofs

• mise x node@22.22.3 -- yarn install passed.
• rg --files packages/nestjs-signed-url | xargs mise x node@22.22.3 -- yarn format passed.
• rg --files packages/nestjs-signed-url -g '*.ts' | xargs mise x node@22.22.3 -- yarn lint passed.
• mise x node@22.22.3 -- yarn typecheck packages/nestjs-signed-url passed.
• cd packages/nestjs-signed-url && mise x node@22.22.3 -- yarn test unit --test-reporter=tap passed: 25 tests, 25 pass.
• cd packages/nestjs-signed-url && mise x node@22.22.3 -- yarn run build passed.
• mise x node@22.22.3 -- yarn explain peer-requirements p775256 passed: reflect-metadata 0.2.2 satisfies all requests.
• mise x node@22.22.3 -- yarn check passed.
• git diff --check passed.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

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Reviewed commit: 7c54be9b1a

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