Returns a JSON nested array of valid remittance strategies and corresponding slugs. The strategies are grouped by type ('bank', 'pickup', etc), and then further broken down by provider. The slug is used to indicate which provider a remittance is meant to be paid out with.


bank: [
  { name: 'Allied Bank',  slug: 'ABC' },
  { name: 'BDO',          slug: 'BDO' },
  { name: 'BPI',          slug: 'BPI' },
pickup: [
  { name: 'Cebuana Lhuillier', slug: 'CLH' },
  { name: 'Palawan Express',   slug: 'PAL' }