OCPVE-231: Improve the design docs

[suleymanakbas91]

This PR improves the content of the documentation under the design folder.

[openshift-ci-robot]

@suleymanakbas91: This pull request references OCPVE-231 which is a valid jira issue.

In response to this:

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[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
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[suleymanakbas91]

/hold

[openshift-ci-robot]

@suleymanakbas91: This pull request references OCPVE-231 which is a valid jira issue.

In response to this:

This PR improves the content of the documentation under the design folder.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[jeff-roche]

/lgtm

[aireilly]

looks good! left a few small comments

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aireilly, qJkee, suleymanakbas91

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[suleymanakbas91]

/unhold

[qJkee]

/lgtm

[codecov-commenter]

Codecov Report

Merging #334 (afa6b28) into main (166b452) will increase coverage by 0.22%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #334      +/-   ##
==========================================
+ Coverage   46.95%   47.17%   +0.22%     
==========================================
  Files          22       22              
  Lines        2232     2232              
==========================================
+ Hits         1048     1053       +5     
+ Misses       1106     1102       -4     
+ Partials       78       77       -1     

Impacted Files	Coverage Δ
controllers/lvmcluster_controller.go	60.00% <ø> (ø)

... and 1 file with indirect coverage changes

[openshift-ci]

@suleymanakbas91: all tests passed!

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