feat(nestjs-signed-url): add module registration api

[TorinAsakura]

Task

• Close [Feature] Add register and registerAsync module APIs #382

How to verify

Main scenario

1. Context: @atls/nestjs-signed-url module registration API
   Action: run yarn typecheck packages/nestjs-signed-url, then run yarn test unit --test-reporter=tap from packages/nestjs-signed-url
   Expected result: TypeScript passes; unit tests cover register with useValue, useExisting, useClass, and registerAsync with useFactory, useClass, useExisting

Additional scenario

1. Context: package publication surface
   Action: run yarn run build and yarn npm publish --dry-run --json from packages/nestjs-signed-url
   Expected result: package builds to dist/index.js; dry-run archive contains production dist/**, CHANGELOG.md, and package.json, without module test files

Proofs

• yarn format packages/nestjs-signed-url/src/module/interfaces.ts packages/nestjs-signed-url/src/module/module.ts packages/nestjs-signed-url/module/tests/module.test.ts packages/nestjs-signed-url/module/tests/fixtures/constants.ts packages/nestjs-signed-url/module/tests/fixtures/consumer.ts packages/nestjs-signed-url/module/tests/fixtures/gateway.ts packages/nestjs-signed-url/module/tests/fixtures/module.ts: passed
• yarn lint packages/nestjs-signed-url/src/module/interfaces.ts packages/nestjs-signed-url/src/module/module.ts packages/nestjs-signed-url/module/tests/module.test.ts packages/nestjs-signed-url/module/tests/fixtures/constants.ts packages/nestjs-signed-url/module/tests/fixtures/consumer.ts packages/nestjs-signed-url/module/tests/fixtures/gateway.ts packages/nestjs-signed-url/module/tests/fixtures/module.ts: passed
• yarn typecheck packages/nestjs-signed-url: passed
• yarn test unit --test-reporter=tap from packages/nestjs-signed-url: 16 tests passed
• yarn run build from packages/nestjs-signed-url: passed
• yarn npm publish --dry-run --json from packages/nestjs-signed-url: dry-run passed
• git diff --check: passed