feat: compatible with cronjob v1beta1

[ldming]

Fix:

• [BUG] cluster schedule backup error: forbidden user cannot create resource backup #6682
• [BUG]dataprotection crash on k8s 1.20 #6676

The pull request fixes issues related to backups failing on Kubernetes 1.20, which only supports CronJob v1beta1 instead of v1.

The main changes include:

• Add CRD conversion between CronJob v1 and v1beta1 APIs. A new package "compat_client" is added to handle the conversion.
• Update controllers and actions to use compat client.

[codecov]

Codecov Report

Attention: Patch coverage is 50.92025% with 80 lines in your changes are missing coverage. Please review.

Project coverage is 66.45%. Comparing base (9f91f8c) to head (fbdd445).

Files	Patch %	Lines
pkg/dataprotection/utils/compat_client.go	52.74%	35 Missing and 8 partials ⚠️
pkg/dataprotection/utils/volumesnapshot.go	8.69%	21 Missing ⚠️
pkg/dataprotection/action/action_create_vs.go	60.00%	0 Missing and 4 partials ⚠️
...ollers/dataprotection/backupschedule_controller.go	70.00%	2 Missing and 1 partial ⚠️
pkg/dataprotection/backup/deleter.go	40.00%	2 Missing and 1 partial ⚠️
controllers/dataprotection/backup_controller.go	60.00%	1 Missing and 1 partial ⚠️
pkg/dataprotection/utils/utils.go	71.42%	2 Missing ⚠️
pkg/dataprotection/action/action_job.go	83.33%	0 Missing and 1 partial ⚠️
pkg/dataprotection/restore/manager.go	75.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6687      +/-   ##
==========================================
+ Coverage   66.43%   66.45%   +0.01%     
==========================================
  Files         304      305       +1     
  Lines       36507    36503       -4     
==========================================
+ Hits        24254    24257       +3     
+ Misses      10163    10160       -3     
+ Partials     2090     2086       -4     

Flag	Coverage Δ
unittests	66.45% <50.92%> (+0.01%)	⬆️

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