[HOTE-1125] feat: create order_status_reminder table

[iichr]

Description

• creates a database table for the order status reminder, using the schema in the Status Updates Triggering Notifications document.
• adds required indexes for searching

tested locally with the db and a seeded entry.

Migration also created in NHSDigital/hometest-mgmt-terraform#96

Context

• enabler for the tracking and storing of reminders

Type of changes

• Refactoring (non-breaking change)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would change existing functionality)
• Bug fix (non-breaking change which fixes an issue)

Checklist

• I am familiar with the contributing guidelines
• I have followed the code style of the project
• I have added tests to cover my changes
• I have updated the documentation accordingly
• This PR is a result of pair or mob programming

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• I confirm that neither PII/PID nor sensitive data are included in this PR and the codebase changes.

[Copilot]

Pull request overview

Adds database support for tracking order-status-triggered reminders by introducing new reminder status types and an order_status_reminder table, plus local seed/sample data and schema diagram updates.

Changes:

• Add reminder_status_type and order_status_reminder tables (with constraints and indexes).
• Seed initial reminder_status_type values via migration.
• Add a sample order_status_reminder seed row and update the PlantUML schema diagram.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
database/schema_diagram.puml	Documents the new reminder tables and relationships in the schema diagram.
database/migrations/000008_add_order_status_reminder_table.sql	Creates reminder tables, inserts initial reminder statuses, and adds indexes.
database/03-seed-hometest-data.sql	Adds a sample order_status_reminder row to local seed data.

[lewisbirks]

Couple of comments, don't forget that a similar change will be required in the terraform repo. Maybe your next ticket can be to resolve that 😅

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.