Adapt monorepo scaffolding to ATS's

[mamoralesiob]

Description:
The monorepo scaffolding has been changed in order to be similar to ATS's, so contracts and sdk folders were nested into the new package folder, while backend, cli, web and docs folder were nested into the new apps folder.
All references to the paths that have changed were also updated in documentation.

├── packages/
│   ├── contracts/              # Solidity smart contracts (Hardhat)
│   │   ├── contracts/
│   │   │   ├── extensions/     # Facets (Burn, CashIn, Freeze, KYC, Pause, Rescue, Reserve, Roles, Wipe, Hold)
│   │   │   ├── resolver/       # BusinessLogicResolver and ResolverProxy
│   │   │   └── Interfaces/     # Contract interfaces
│   │   └── test/
│   └── sdk/                    # TypeScript SDK (Hexagonal Architecture + DDD + CQS)
│       └── src/
│           ├── domain/         # Domain entities and business logic
│           ├── app/            # Application layer (commands, queries, handlers)
│           ├── port/           # Inbound/outbound ports
│           └── core/           # Infrastructure and cross-cutting concerns
├── apps/
│   ├── backend/                # NestJS REST API for multisignature transactions
│   ├── cli/                    # Command-line interface for stablecoin operations
│   ├── web/                    # React DApp for stablecoin management
│   └── docs/                   # Documentation site (Docusaurus)
├── documentation/          # Technical documentation content
│   ├── gettingStarted/     # Setup and onboarding guides
│   ├── sdk/                # SDK documentation
│   ├── backend/            # Backend documentation
│   ├── client/             # CLI documentation
│   └── web/                # Web DApp documentation
└── package.json            # Workspace configuration and root scripts

Related issue(s):

Fixes #

Notes for reviewer:

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[swirlds-automation]

✅ Snyk checks have passed. No issues have been found so far.

Status	Scanner	Critical	High	Medium	Low	Total (0)
✅	Open Source Security	0	0	0	0	0 issues
✅	Licenses	0	0	0	0	0 issues

💻 Catch issues earlier using the plugins for VS Code, JetBrains IDEs, Visual Studio, and Eclipse.

[andrewb1269]

Approve workflow and gitignore updates.

[jaime-iobermudez]

@mamoralesiob Could you take a look at the compose.yaml in the backend folder? I’m testing it, but it’s not working, the path needs to be updated since it’s now located inside the app folder

[sonarqubecloud]

❌ The last analysis has failed.

See analysis details on SonarQube Cloud