tailcfg: add recorders field to SSHRule struct

This change introduces the Recorders field to the SSHRule struct. The
field is used to store and define addresses where the ssh recorder is
located.

Signed-off-by: Charlotte Brandhorst-Satzkorn <charlotte@tailscale.com>

tailcfg/tailcfg.go

@@ -1948,6 +1948,10 @@ type SSHRule struct {
 	// Action is the outcome to task.
 	// A nil or invalid action means to deny.
 	Action *SSHAction `json:"action"`
+
+	// Recorders defines the destinations of the SSH session recorders.
+	// The recording will be uploaded to http://addr:port/record.
+	Recorders []netip.AddrPort `json:"recorders"`
 }
 
 // SSHPrincipal is either a particular node or a user on any node.