feat: a Fields pane for anything but a secret, first for Azure accounts: fields and groups to move through, filter and copy (#7)

internal/provider/provider.go

@@ -198,3 +198,10 @@ type Account struct {
 	// Copy is what y copies on the provider's row, named CopyLabel.
 	Copy, CopyLabel string
 }
+
+// AccountGroups is implemented by providers that can list the groups
+// their account is a member of, directly or through other groups. It
+// goes over the network.
+type AccountGroups interface {
+	Groups(ctx context.Context) ([]string, error)
+}