connector: first sync of conversations

go.mod

go.sum

pkg/connector/backfill.go

pkg/connector/client.go

pkg/connector/config.go

pkg/connector/example-config.yaml

pkg/connector/linkedinfmt/convert.go

pkg/connector/linkedinfmt/html.go

pkg/connector/linkedinfmt/styletype_string.go

pkg/connector/linkedinfmt/tags.go

pkg/connector/matrixfmt/convert.go

pkg/connector/matrixfmt/html.go

pkg/connector/sync.go

pkg/linkedingo/attributedtext.go

pkg/linkedingo/conversations.go

pkg/linkedingo/messages.go

pkg/linkedingo/request.go