feat: Add Tailscale networking (#3505)

* fix: Add coder user to docker group on installation

This makes for a simpler setup, and reduces the likelihood
a user runs into a strange issue.

* Add wgnet

* Add ping

* Add listening

* Finish refactor to make this work

* Add interface for swapping

* Fix conncache with interface

* chore: update gvisor

* fix tailscale types

* linting

* more linting

* Add coordinator

* Add coordinator tests

* Fix coordination

* It compiles!

* Move all connection negotiation in-memory

* Migrate coordinator to use net.conn

* Add closed func

* Fix close listener func

* Make reconnecting PTY work

* Fix reconnecting PTY

* Update CI to Go 1.19

* Add CLI flags for DERP mapping

* Fix Tailnet test

* Rename ConnCoordinator to TailnetCoordinator

* Remove print statement from workspace agent test

* Refactor wsconncache to use tailnet

* Remove STUN from unit tests

* Add migrate back to dump

* chore: Upgrade to Go 1.19

This is required as part of #3505.

* Fix reconnecting PTY tests

* fix: update wireguard-go to fix devtunnel

* fix migration numbers

* linting

* Return early for status if endpoints are empty

* Update cli/server.go

Co-authored-by: Colin Adler <colin1adler@gmail.com>

* Update cli/server.go

Co-authored-by: Colin Adler <colin1adler@gmail.com>

* Fix frontend entites

* Fix agent bicopy

* Fix race condition for the last node

* Fix down migration

* Fix connection RBAC

* Fix migration numbers

* Fix forwarding TCP to a local port

* Implement ping for tailnet

* Rename to ForceHTTP

* Add external derpmapping

* Expose DERP region names to the API

* Add global option to enable Tailscale networking for web

* Mark DERP flags hidden while testing

* Update DERP map on reconnect

* Add close func to workspace agents

* Fix race condition in upstream dependency

* Fix feature columns race condition

Co-authored-by: Colin Adler <colin1adler@gmail.com>

cli/features.go

@@ -13,8 +13,6 @@ import (
 	"github.com/coder/coder/codersdk"
 )
 
-var featureColumns = []string{"Name", "Entitlement", "Enabled", "Limit", "Actual"}
-
 func features() *cobra.Command {
 	cmd := &cobra.Command{
 		Short:   "List features",
@@ -29,8 +27,9 @@ func features() *cobra.Command {
 
 func featuresList() *cobra.Command {
 	var (
-		columns      []string
-		outputFormat string
+		featureColumns = []string{"Name", "Entitlement", "Enabled", "Limit", "Actual"}
+		columns        []string
+		outputFormat   string
 	)
 
 	cmd := &cobra.Command{