feat: Add health checks for ServiceBinding and ServiceInstance

[dzahariev]

Add health check for ServiceBinding and ServiceInstance resources managed by sap-btp-service-operator.

The resources can have status type "Succeeded" or "Failed" and for values are one of "True" or "False".
In following 2 cases resource is considered as "Degraded":

• (Succeeded:False)
• (Failed:True)

In case status is missing the resource it is considered as "Progressing"
In case observed generation did not match the current generation the resource it is considered as "Progressing"
In case resource is marked for deletion the resource it is considered as "Progressing"
And in all other cases it is considered as "Healthy"

Verified:

Checklist:

• (c) this does not need to be in the release notes.
• The title of the PR states what changed and the related issues number (used for the release note).
• The title of the PR conforms to the Title of the PR
• I have signed off all my commits as required by DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My build is green (troubleshooting builds).
• My new feature complies with the feature status guidelines.
• I have added a brief description of why this PR is necessary and/or what this PR solves.

Replacing: #24928

[bunnyshell]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 60.91%. Comparing base (b8f5299) to head (4996f0c).
⚠️ Report is 410 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #25007      +/-   ##
==========================================
+ Coverage   60.83%   60.91%   +0.08%     
==========================================
  Files         351      351              
  Lines       60489    60489              
==========================================
+ Hits        36796    36846      +50     
+ Misses      20767    20726      -41     
+ Partials     2926     2917       -9     

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[crenshaw-dev]

Thanks!