chore(operator): standardize k8s Events on lifecycle path

[odubajDT]

Fixes: #1683

Changes

• standardize k8s Events on lifecycle path - introduce started, finished and failed events
• introduce PhaseStates of Phases and make use of them in the code
• remove k8s Events creating big noise and having no big value for the end users (not finished Events, ...)
• add more tests
• normalize all Events to use the same pattern

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[codecov]

Codecov Report

Merging #1692 (36d3c47) into main (f47ca50) will decrease coverage by 0.16%.
The diff coverage is 43.18%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1692      +/-   ##
==========================================
- Coverage   63.59%   63.43%   -0.16%     
==========================================
  Files         143      143              
  Lines       10934    10907      -27     
==========================================
- Hits         6953     6919      -34     
- Misses       3719     3727       +8     
+ Partials      262      261       -1     

Impacted Files	Coverage Δ
operator/apis/lifecycle/v1alpha3/common/phases.go	100.00% <ø> (ø)
...rator/controllers/lifecycle/keptnapp/controller.go	63.47% <0.00%> (-0.63%)	⬇️
...rator/controllers/lifecycle/keptntask/job_utils.go	73.33% <0.00%> (-0.84%)	⬇️
...ifecycle/keptntaskdefinition/reconcile_function.go	71.11% <0.00%> (-4.45%)	⬇️
.../controllers/lifecycle/keptnworkload/controller.go	65.47% <0.00%> (-0.41%)	⬇️
...rator/webhooks/pod_mutator/pod_mutating_webhook.go	75.13% <0.00%> (+0.27%)	⬆️
...ontrollers/lifecycle/keptnevaluation/controller.go	76.12% <33.33%> (-0.31%)	⬇️
...controllers/lifecycle/keptntask/runtime_builder.go	70.44% <33.33%> (ø)
operator/controllers/common/taskhandler.go	78.51% <50.00%> (-0.62%)	⬇️
...lers/lifecycle/keptnworkloadinstance/controller.go	76.74% <60.00%> (-5.00%)	⬇️
... and 4 more

... and 3 files with indirect coverage changes

Flag	Coverage Δ
certificate-operator	68.55% <ø> (ø)
component-tests	57.79% <7.14%> (-1.48%)	⬇️
lifecycle-operator	84.90% <48.64%> (+0.32%)	⬆️
metrics-operator	82.32% <ø> (ø)
scheduler	32.12% <ø> (ø)

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication