feat: expose meta column and transaction relationships in Orders report schema

[roncodes]

Summary

This PR exposes the meta column and transaction relationships in the Orders report schema, enabling users to query and report on critical financial data and custom metadata associated with orders.

Changes Made

1. Meta Column Exposure

• Removed meta from excludeColumns array
• Added formal column definition for meta with JSON type
• Enabled searchable and filterable capabilities

2. Transaction Relationship

• Added transaction relationship with auto-join support
• Exposed key transaction fields:
  • Transaction ID and Gateway Transaction ID
  • Payment gateway information
  • Amount (with currency formatting transformer)
  • Currency, description, type, and status
  • Transaction date

3. Nested Transaction Items

• Added items as nested relationship under transaction
• Exposed transaction line item fields:
  • Item amount and currency
  • Item details and codes

4. Financial Computed Columns

• Total Transaction Amount (sum)
• Average Transaction Amount
• Count of Orders with Transactions

Impact

Users can now:

• Query and filter orders by metadata fields
• Report on transaction financial data
• Access transaction line item details
• Generate financial aggregates across orders
• Build comprehensive financial reports

Technical Details

• File modified: server/src/Support/Reporting/FleetOpsReportSchema.php
• Lines changed: +129, -1
• Uses existing reporting framework auto-join capabilities
• No database migrations required (relationships already exist)
• No UI changes required (report builder automatically adapts)

Testing Recommendations

• Verify meta column appears in report builder
• Test transaction relationship joins
• Verify nested transaction items are accessible
• Test financial aggregate calculations
• Validate currency formatting in reports