Feat: support pause reconcile

[Somefive]

Description of your changes

Fixes #5723

Usage:

Add label controller.core.oam.dev/pause: "true" to application will let it be ignored by the controller. Once the label value is not "true" or be removed, it will be reconciled again.

apiVersion: core.oam.dev/v1beta1
kind: Application
metadata:
  name: busybox
  labels:
    controller.core.oam.dev/pause: "true"
spec:
  components:
    - name: data-worker
      type: worker
      properties:
        image: busybox
        cmd:
          - sleep
          - '1000000'

I have:

• Read and followed KubeVela's contribution process.
• Related Docs updated properly. In a new feature or configuration option, an update to the documentation is necessary.
• Run make reviewable to ensure this PR is ready for review.
• Added backport release-x.y labels to auto-backport this PR if necessary.

How has this code been tested

Special notes for your reviewer

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[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.02 ⚠️

Comparison is base (80da131) 61.71% compared to head (08e9e69) 61.70%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5732      +/-   ##
==========================================
- Coverage   61.71%   61.70%   -0.02%     
==========================================
  Files         217      217              
  Lines       30582    30736     +154     
==========================================
+ Hits        18875    18965      +90     
- Misses       9991    10039      +48     
- Partials     1716     1732      +16     

Flag	Coverage Δ
core-unittests	55.81% <0.00%> (-0.06%)	⬇️
e2e-multicluster-test	25.79% <100.00%> (+<0.01%)	⬆️
e2e-rollout-tests	22.37% <0.00%> (-0.06%)	⬇️
e2etests	28.12% <0.00%> (-0.08%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...dev/v1alpha2/application/application_controller.go	85.77% <100.00%> (+0.06%)	⬆️

... and 10 files with indirect coverage changes

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