Selector not available in the GenericSyncer's Import

[ajithcnambiar]

What happened?

The selector won't work for the generic synced's import.

What did you expect to happen?

As per the docs, the selector is supposed to be accepted.
https://www.vcluster.com/docs/vcluster/configure/vcluster-yaml/experimental/generic-sync#:~:text=limit%20which%20resources%20to%20sync%20from%20the%20host%20cluster

How can we reproduce it (as minimally and precisely as possible)?

try vcluster create command with the below config:

experimental:
  multiNamespaceMode:
    enabled: true

  genericSync:
    import:
      - kind: ServiceAccount
        apiVersion: v1
        selector:
          labelSelector:
            app: "curler"

vcluster create my-vcluster --values vcluster-config/vvv.yaml  --chart-version 0.20.0-beta.9
23:36:16 info Creating namespace vcluster-my-vcluster
23:36:17 fatal invalid config: error unmarshaling JSON: while decoding JSON: json: unknown field "selector"

Anything else we need to know?

As compared to exporter's selector implementation, importer misses these:

1/ selector field doesn't exist in importer
https://github.com/loft-sh/vcluster/blob/main/config/config.go#L1803

2/ exclude based on the selector
exporter checks selector https://github.com/loft-sh/vcluster/blob/main/pkg/controllers/generic/export_syncer.go#L136-L140
where importer doesn't https://github.com/loft-sh/vcluster/blob/main/pkg/controllers/generic/import_syncer.go#L182

If this is a miss, happy to contribute, if you prefer :)

Host cluster Kubernetes version

$ kubectl version
Client Version: v1.30.2
Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3
Server Version: v1.29.0

vcluster version

$ vcluster --version
vcluster version 0.20.0-beta.9

VCluster Config

experimental:
  multiNamespaceMode:
    enabled: true

  genericSync:
    import:
      - kind: ServiceAccount
        apiVersion: v1
        selector:
          labelSelector:
            app: "curler"