Documentation needed for all schema fields

[patrickcping]

All schema fields we expose should have documentation attached. Ideally these come from any official documentation we might have

terraform-provider-davinci/internal/service/davinci/resource_application.go

Lines 31 to 34 in 1a2d766

	"customer_id": {
	Type: schema.TypeString,
	Computed: true,
	},

Applies to all schema

[samir-gandhi]

resolved in #102