Migrate `read_resource()` to Data Package v2

[peterdesmet]

• Until read_package() to upgrade Data Package from v1 to v2 #318 is implemented, use frictionless::example_package(version = "2.0") as input
• Tackle Support package.$schema #220
• Tackle Support resource.type #221
• Tackle Support labeled schema.missingValues  #222
• Make sure missingValues is always an array
• Decide whether to upgrade_resource() or not. No
  • Change vignette
• Decide whether to upgrade_schema() or not No
  • Change vignette
• Create test with v1 vs v2 resource
• If changes were implemented
  • Update documentation
  • Update examples (switch order)
  • Update NEWS.md
• Update support table in Migrate all functions to Data Package v2 #320