Add automated EMQX bridge setup for Expert broker

[Steve-Mcl]

Description

TLDR
Adds setup and maintenance for automated configuration of FF App team broker to new central Expert Broker

DETAILS
This PR introduces provisioning for the EMQX bridge between the FlowFuse App Instance Broker and the Expert Broker. It adds resource templates, orchestrator and helper functions, and scheduled tasks to ensure the bridge is always correctly configured and synchronized, both at startup and on a weekly basis. Additionally, it extends the license API to expose the raw license string (for configuring the bridge), and adds corresponding unit tests.

EMQX Bridge Provisioning and Management

• Added a new module setup.js that provides high-level orchestration (syncBridge), low-level resource management (addBridge, removeBridge), and health-check (validateBridge) functions for the EMQX bridge, including dependency-aware resource creation and teardown, configuration validation, and error handling.
• Defined resource templates for the EMQX connector, actions, sources, and rules in templates.js, supporting the full bridge lifecycle and MQTT v5 features required for expert chat and inflight requests.

Automated Bridge Synchronization

• Registered a startup task to perform a full bridge resynchronization at application startup, ensuring any changes to templates or license details are applied immediately.
• Added a weekly scheduled task that checks and repairs the bridge if any resources are missing or if license details have changed, minimizing disruption to active sessions.

License API

• Updated the license API to expose a raw() method, returning the raw license string for use in bridge configuration.
• Added unit tests to verify the new raw() method and license status reporting in both licensed and unlicensed scenarios. [1] [2]

Related Issue(s)

closes #7181

Checklist

• I have read the contribution guidelines
• Suitable unit/system level tests have been added and they pass
• Documentation has been updated
  • Upgrade instructions
  • Configuration details
  • Concepts
• Changes flowforge.yml?
  • Issue/PR raised on FlowFuse/helm to update ConfigMap Template
  • Issue/PR raised on FlowFuse/CloudProject to update values for Staging/Production
• Link to Changelog Entry PR, or note why one is not needed.

Labels

• Includes a DB migration? -> add the area:migration label

[codecov]

Codecov Report

❌ Patch coverage is 93.86503% with 10 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.72%. Comparing base (c3c8f6f) to head (5982f02).

Files with missing lines	Patch %	Lines
forge/ee/lib/expert/tasks/startup.js	0.00%	4 Missing ⚠️
forge/ee/lib/expert/tasks/weekly.js	0.00%	4 Missing ⚠️
forge/ee/lib/expert/emxq-bridge/setup.js	98.63%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7184      +/-   ##
==========================================
+ Coverage   76.59%   76.72%   +0.13%     
==========================================
  Files         405      409       +4     
  Lines       20579    20742     +163     
  Branches     4975     5016      +41     
==========================================
+ Hits        15762    15915     +153     
- Misses       4817     4827      +10     

Flag	Coverage Δ
backend	76.72% <93.86%> (+0.13%)	⬆️

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[hardillb]

Need to sort out the TLS stuff, give me a shout if needed.

And just a schedule bit