Sets license for all node.js packages to `GPL-2.0-or-later`
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## Summary by CodeRabbit
- **Chores**
- Simplified license compliance verification by removing legacy script
logic.
- Updated licensing terms across components to GPL-2.0-or-later for
broader compatibility.
- **Documentation**
- Revised setup instructions to indicate that the use of the Just build
tool is now optional.
- **New Features**
- Added fallback support in the build automation tool to ensure smoother
operations when targets are missing.
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- **New Features**
- Created a dynamic plugin system for the API to enable community
augmentation of GraphQL, CLI, and Cron functionalities capabilities.
- Included an example plugin under `packages/unraid-api-plugin-health`
that adds a new graphql query for API health checks.
- Added `rc.unraid-api` commands for backing up, restoring, and
installing production dependencies, streamlining maintenance and
deployment.
- Improved dependency vendoring by bundling a versioned pnpm store
(instead of `node_modules`). Versioning will allow users to add plugins
to a specific api release without requiring an internet connection on
subsequent reboots.
- **Chores**
- Upgraded build workflows and versioning processes to ensure more
reliable artifact handling and production packaging.
Pujit Mehrotra