Add @nestarc/tenancy module for multi-tenancy support

[ksyq12]

Added a new module for PostgreSQL Row Level Security based multi-tenancy support.

Pull Request

Type of Change

• Adding a new resource
• Updating an existing resource
• Removing an outdated resource
• Fixing a bug (broken link, typo, etc.)
• Other (please describe)

Description

Add @nestarc/tenancy to the Multi Tenancy section. A PostgreSQL RLS-based multi-tenancy module for NestJS with Prisma Client Extensions and AsyncLocalStorage.

Checklist

Please ensure your PR meets the following requirements:

• I have read the contribution guidelines
• The resource I'm adding has at least 10 GitHub stars (if applicable)
• The link I'm adding is working and points to the correct resource
• I have placed the resource in the appropriate category
• The description is clear and concise
• I have followed the existing format:
  • - [Name](URL) - Description.
  • For libraries with star badges: - ![](star-badge-url) [Name](URL) - Description.

Resource Details (if adding a new resource)

• Name: @nestarc/tenancy
• URL: https://github.com/nestarc/nestjs-tenancy
• Category: Components & Libraries > Multi Tenancy
• GitHub Stars (if applicable): 0 (newly published)
• Why is this resource valuable to the NestJS community? The only NestJS multi-tenancy module that enforces tenant isolation at the PostgreSQL level using Row Level Security (RLS) with Prisma support. Complements the existing nestjs-mtenant (Sequelize/TypeORM-based) by covering the Prisma ecosystem with a fail-closed security model.