This isn't used as far as we know and also isn't manitained. Due to old
gem requirements if preventing some new gem from being installed.

Allow method to be run without arguments.

This commit introduces a new Workflow system that allows for the
execution of a sequence of jobs on a given resource.

Components include:
- Workflow class: Manages the overall workflow and job execution
- Workflow::Job model: Represents individual jobs within a workflow
- Workflow::Source module: Handles source content and output attachments
- Workflow::Transitions module: Manages job state transitions
- WorkflowJob: Background job for processing workflows

Features:
- Sequential job execution with parent-child relationships
- Job status tracking (pending, queued, processing, failed, completed)
- Automatic progression through workflow steps
- Extensible design for custom job types

This lays the groundwork for implementing specific workflow processes in
the application.

- Introduce Chunk model for storing text fragments and embeddings
- Add Chunkable concern for processing models through chunking workflow
- Implement chunking for InfoRequest, IncomingMessage, and FoiAttachment
  models

This commit lays the groundwork for AI-powered text analysis by adding
a chunking system that breaks down text from various models into smaller,
analyzable pieces.

- Implement ConvertToText, AnonymizeText, and CreateChunks jobs
- Update Workflow class to use new job classes

Run on requests where the requester is using projects and has the
insights feature flag.