feat: Add config-ssh command (#735)

* feat: Add config-ssh command

Closes #254 and #499.

* Fix Windows support

cli/configssh_test.go

@@ -0,0 +1,41 @@
+package cli_test
+
+import (
+	"os"
+	"testing"
+
+	"github.com/coder/coder/cli/clitest"
+	"github.com/coder/coder/coderd/coderdtest"
+	"github.com/coder/coder/pty/ptytest"
+	"github.com/stretchr/testify/require"
+)
+
+func TestConfigSSH(t *testing.T) {
+	t.Parallel()
+	t.Run("Create", func(t *testing.T) {
+		t.Parallel()
+		client := coderdtest.New(t, nil)
+		user := coderdtest.CreateFirstUser(t, client)
+		coderdtest.NewProvisionerDaemon(t, client)
+		version := coderdtest.CreateProjectVersion(t, client, user.OrganizationID, nil)
+		coderdtest.AwaitProjectVersionJob(t, client, version.ID)
+		project := coderdtest.CreateProject(t, client, user.OrganizationID, version.ID)
+		workspace := coderdtest.CreateWorkspace(t, client, "", project.ID)
+		coderdtest.AwaitWorkspaceBuildJob(t, client, workspace.LatestBuild.ID)
+		tempFile, err := os.CreateTemp(t.TempDir(), "")
+		require.NoError(t, err)
+		_ = tempFile.Close()
+		cmd, root := clitest.New(t, "config-ssh", "--ssh-config-file", tempFile.Name())
+		clitest.SetupConfig(t, client, root)
+		doneChan := make(chan struct{})
+		pty := ptytest.New(t)
+		cmd.SetIn(pty.Input())
+		cmd.SetOut(pty.Output())
+		go func() {
+			defer close(doneChan)
+			err := cmd.Execute()
+			require.NoError(t, err)
+		}()
+		<-doneChan
+	})
+}