A following change will split out the controlclient.NoiseClient type
out, away from the rest of the controlclient package which is
relatively dependency heavy.
A question was where to move it, and whether to make a new (a fifth!)
package in the ts2021 dependency chain.
@creachadair and I brainstormed and decided to merge
internal/noiseconn and controlclient.NoiseClient into one package,
with names ts2021.Conn and ts2021.Client.
For ease of reviewing the subsequent PR, this is the first step that
just renames the internal/noiseconn package to control/ts2021.
Updates #17305
Change-Id: Ib5ea162dc1d336c1d805bdd9548d1702dd6e1468
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Brad Fitzpatrick