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

coderd/audit/audit.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"sync"
 
-	"github.com/coder/coder/coderd/database"
+	"github.com/coder/coder/v2/coderd/database"
 )
 
 type Auditor interface {

coderd/audit/diff.go

@@ -1,7 +1,7 @@
 package audit
 
 import (
-	"github.com/coder/coder/coderd/database"
+	"github.com/coder/coder/v2/coderd/database"
 )
 
 // Auditable is mostly a marker interface. It contains a definitive list of all

coderd/audit/request.go

@@ -13,9 +13,9 @@ import (
 	"github.com/sqlc-dev/pqtype"
 
 	"cdr.dev/slog"
-	"github.com/coder/coder/coderd/database"
-	"github.com/coder/coder/coderd/httpmw"
-	"github.com/coder/coder/coderd/tracing"
+	"github.com/coder/coder/v2/coderd/database"
+	"github.com/coder/coder/v2/coderd/httpmw"
+	"github.com/coder/coder/v2/coderd/tracing"
 )
 
 type RequestParams struct {