chore: add /v2 to import module path (#9072)

* chore: add /v2 to import module path

go mod requires semantic versioning with versions greater than 1.x

This was a mechanical update by running:
```
go install github.com/marwan-at-work/mod/cmd/mod@latest
mod upgrade
```

Migrate generated files to import /v2

* Fix gen

tailnet/conn.go

@@ -43,8 +43,8 @@ import (
 	"tailscale.com/wgengine/wgcfg/nmcfg"
 
 	"cdr.dev/slog"
-	"github.com/coder/coder/coderd/database"
-	"github.com/coder/coder/cryptorand"
+	"github.com/coder/coder/v2/coderd/database"
+	"github.com/coder/coder/v2/cryptorand"
 )
 
 const (

tailnet/conn_test.go

@@ -11,9 +11,9 @@ import (
 
 	"cdr.dev/slog"
 	"cdr.dev/slog/sloggers/slogtest"
-	"github.com/coder/coder/tailnet"
-	"github.com/coder/coder/tailnet/tailnettest"
-	"github.com/coder/coder/testutil"
+	"github.com/coder/coder/v2/tailnet"
+	"github.com/coder/coder/v2/tailnet/tailnettest"
+	"github.com/coder/coder/v2/testutil"
 )
 
 func TestMain(m *testing.M) {

tailnet/coordinator.go

@@ -21,7 +21,7 @@ import (
 	"tailscale.com/types/key"
 
 	"cdr.dev/slog"
-	"github.com/coder/coder/coderd/util/slice"
+	"github.com/coder/coder/v2/coderd/util/slice"
 )
 
 // Coordinator exchanges nodes with agents to establish connections.

tailnet/coordinator_test.go

@@ -18,8 +18,8 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
-	"github.com/coder/coder/tailnet"
-	"github.com/coder/coder/testutil"
+	"github.com/coder/coder/v2/tailnet"
+	"github.com/coder/coder/v2/testutil"
 )
 
 func TestCoordinator(t *testing.T) {

tailnet/derpmap_test.go

@@ -12,7 +12,7 @@ import (
 	"github.com/stretchr/testify/require"
 	"tailscale.com/tailcfg"
 
-	"github.com/coder/coder/tailnet"
+	"github.com/coder/coder/v2/tailnet"
 )
 
 func TestNewDERPMap(t *testing.T) {

tailnet/tailnettest/multiagentmock.go

@@ -8,7 +8,7 @@ import (
 	context "context"
 	reflect "reflect"
 
-	tailnet "github.com/coder/coder/tailnet"
+	tailnet "github.com/coder/coder/v2/tailnet"
 	gomock "github.com/golang/mock/gomock"
 	uuid "github.com/google/uuid"
 )

tailnet/tailnettest/tailnettest.go

@@ -18,7 +18,7 @@ import (
 	"tailscale.com/types/nettype"
 
 	"cdr.dev/slog/sloggers/slogtest"
-	"github.com/coder/coder/tailnet"
+	"github.com/coder/coder/v2/tailnet"
 )
 
 //go:generate mockgen -destination ./multiagentmock.go -package tailnettest github.com/coder/coder/tailnet MultiAgentConn

tailnet/tailnettest/tailnettest_test.go

@@ -5,7 +5,7 @@ import (
 
 	"go.uber.org/goleak"
 
-	"github.com/coder/coder/tailnet/tailnettest"
+	"github.com/coder/coder/v2/tailnet/tailnettest"
 )
 
 func TestMain(m *testing.M) {