KusionStack / karpor / 10808634043

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feat(syncer): supports users to group related resources by adding same label (#589)

## What type of PR is this?

/kind feature

## What this PR does / why we need it:

For example, we have an app named `ray`, and we want to quick search all
its events including deployment and pods.

we can add label `app=ray` to all its events, then we can just type ``
where kind = 'Event' and `labels.app` = "ray" `` to search all related
events.

```yaml
---
apiVersion: search.karpor.io/v1beta1
kind: TransformRule
metadata:
  name: for-events
spec:
  type: patch
  valueTemplate: |
    {{- $ref := (objectRef .Object.involvedObject.apiVersion .Object.involvedObject.kind .Object.involvedObject.namespace .Object.involvedObject.name) -}}
    [
      { "op": "add", "path": "/metadata/labels", "value": { "app": "{{ index $ref.Object.metadata.labels "app" }}" } }
    ]
---
apiVersion: search.karpor.io/v1beta1
kind: SyncRegistry
metadata:
  name: events-sync-rule
spec:
  clusters:
    - "*"
  syncResources:
    - apiVersion: v1
      resource: events
      transformRefName: for-events
      namespace: test
```


## Which issue(s) this PR fixes:

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Fixes #

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