Move OCMWrapper interface to ocm package and ClientUtils to backplane-api package

[samanthajayasinghe]

What type of PR is this?

cleanup

What this PR does / Why we need it?

• Moving OCMWrapper from util package to ocm package
• Moving ClientUtils from util package to ocmbackplane-api package

Pre-checks (if applicable)

• Ran unit tests locally
• Validated the changes in a cluster
• Included documentation changes with PR

[codecov-commenter]

Codecov Report

Merging #280 (4b7e13e) into main (0b3a66a) will decrease coverage by 0.99%.
Report is 2 commits behind head on main.
The diff coverage is 25.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #280      +/-   ##
==========================================
- Coverage   47.82%   46.83%   -0.99%     
==========================================
  Files          52       53       +1     
  Lines        3467     3540      +73     
==========================================
  Hits         1658     1658              
- Misses       1548     1621      +73     
  Partials      261      261              

Files	Coverage Δ
cmd/ocm-backplane/managedJob/createManagedJob.go	72.36% <100.00%> (ø)
cmd/ocm-backplane/managedJob/deleteManagedJob.go	48.14% <100.00%> (ø)
cmd/ocm-backplane/managedJob/getManagedJob.go	66.15% <100.00%> (ø)
cmd/ocm-backplane/script/describeScript.go	79.22% <100.00%> (ø)
cmd/ocm-backplane/script/listScripts.go	68.62% <100.00%> (ø)
cmd/ocm-backplane/testJob/createTestJob.go	71.15% <100.00%> (ø)
cmd/ocm-backplane/testJob/getTestJob.go	58.33% <100.00%> (ø)
pkg/ocm/ocmWrapper.go	0.00% <ø> (ø)
pkg/utils/cluster.go	88.23% <100.00%> (ø)
cmd/ocm-backplane/cloud/credentials.go	60.81% <66.66%> (ø)
... and 12 more

[mjlshen]

/label tide/merge-method-squash
/approve

[openshift-ci]

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[bmeng]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bmeng, mjlshen, samanthajayasinghe

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• OWNERS [bmeng,mjlshen]

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