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

scripts/dbgen/main.go

@@ -526,7 +526,7 @@ func loadInterfaceFuncs(f *dst.File, interfaceName string) ([]querierFunction, e
 				if !ident.IsExported() {
 					continue
 				}
-				ident.Path = "github.com/coder/coder/coderd/database"
+				ident.Path = "github.com/coder/coder/v2/coderd/database"
 			}
 		}