V2 - Changes on invoices index endpoints filter

We've made several adjustments to our invoice index endpoints related to the invoice_number filter for consistency and performance improvement:

• customer_invoices:
  • Removed lt, lteq, gt, gteq operators
• supplier_invoices:
  • Removed start_with operator
  • Added eq, not_eq, in, not_in operators
• draft_invoices:
  • Removed lt, lteq, gt, gteq operators
• credit_notes:
  • Added eq, not_eq, in, not_in operators