docs: documentation for restartable applications feature

[bacherfl]

Closes #591
Signed-off-by: Florian Bacher [email protected]

[codecov]

Codecov Report

Merging #645 (aac35e7) into main (4ea7da9) will decrease coverage by 0.01%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #645      +/-   ##
==========================================
- Coverage   54.68%   54.68%   -0.01%     
==========================================
  Files          78       78              
  Lines        6515     6516       +1     
==========================================
  Hits         3563     3563              
- Misses       2800     2801       +1     
  Partials      152      152              

Impacted Files	Coverage Δ
...okcontroller/keptnwebhookcertificate_controller.go	50.81% <0.00%> (-0.42%)	⬇️
...ator/controllers/lifecycle/keptntask/controller.go	53.93% <0.00%> (ø)
...llers/keptnwebhookcontroller/certificate_secret.go	85.88% <0.00%> (ø)
operator/webhooks/pod_mutating_webhook.go
...rator/webhooks/pod_mutator/pod_mutating_webhook.go	35.83% <0.00%> (ø)

Flag	Coverage Δ
component-tests	53.16% <ø> (-0.88%)	⬇️
keptn-cert-manager	67.56% <ø> (-0.16%)	⬇️
keptn-lifecycle-operator	52.13% <ø> (ø)
scheduler	21.17% <ø> (ø)

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

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