feat(nestjs-signed-url): align package shape

[TorinAsakura]

Таска

• Close [Feature] Fix signed URL package exports and public API #381
• Refs [Feature] Rename signed URL package to @atls/nestjs-signed-url #379

Как проверять

Основной сценарий

1. Контекст: @atls/nestjs-signed-url workspace package metadata and public entrypoint
   Действие: run yarn workspace @atls/nestjs-signed-url build
   Ожидаемый результат: package TypeScript build completes successfully and emits the public entrypoint types

Дополнительный сценарий

1. Контекст: @atls/nestjs-signed-url publish surface
   Действие: run yarn workspace @atls/nestjs-signed-url pack --dry-run
   Ожидаемый результат: dry-run pack includes dist, package.json, and package metadata without publishing anything

Пруфы

• YARN_ENABLE_SCRIPTS=false yarn install --immutable

Done with warnings

• yarn workspace @atls/nestjs-signed-url build

TYPESCRIPT: Processing... ✔ 9 Files

• yarn workspace @atls/nestjs-signed-url pack --dry-run

CHANGELOG.md
dist/index.d.ts
dist/index.js
package.json
Done