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>

coderd/workspaceapps_test.go

@@ -81,8 +81,11 @@ func TestWorkspaceAppsProxyPath(t *testing.T) {
 
 	agentClient := codersdk.New(client.URL)
 	agentClient.SessionToken = authToken
-	agentCloser := agent.New(agentClient.ListenWorkspaceAgent, &agent.Options{
-		Logger: slogtest.Make(t, nil),
+	agentCloser := agent.New(agent.Options{
+		FetchMetadata:     agentClient.WorkspaceAgentMetadata,
+		CoordinatorDialer: agentClient.ListenWorkspaceAgentTailnet,
+		WebRTCDialer:      agentClient.ListenWorkspaceAgent,
+		Logger:            slogtest.Make(t, nil).Named("agent"),
 	})
 	t.Cleanup(func() {
 		_ = agentCloser.Close()