docs: use helm charts instead of manifests + document KeptnConfig CRD

[odubajDT]

Signed-off-by: odubajDT ondrej.dubaj@dynatrace.com

Fixes: #597

PLEASE do not merge this until we do not have a first version of helm-charts released

[codecov]

Codecov Report

Merging #747 (00305b9) into main (59ee362) will decrease coverage by 0.74%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #747      +/-   ##
==========================================
- Coverage   57.81%   57.07%   -0.74%     
==========================================
  Files         122      104      -18     
  Lines       10095     9014    -1081     
==========================================
- Hits         5836     5145     -691     
+ Misses       4051     3694     -357     
+ Partials      208      175      -33     

Impacted Files	Coverage Δ
metrics-operator/cmd/webhook/manager.go
...ics-operator/api/v1alpha1/zz_generated.deepcopy.go
metrics-operator/pkg/metrics/server.go
metrics-operator/api/v1alpha1/keptnmetric_types.go
...ollers/common/providers/dynatrace/client/config.go
...trics-operator/api/v1alpha2/keptnmetric_webhook.go
...ollers/common/providers/dynatrace/dynatrace_dql.go
...-operator/controllers/common/providers/provider.go
...ics-operator/api/v1alpha2/zz_generated.deepcopy.go
metrics-operator/cmd/webhook/builder.go
... and 16 more

Flag	Coverage Δ
certificate-operator	64.15% <ø> (ø)
component-tests	53.12% <ø> (+0.05%)	⬆️
lifecycle-operator	53.63% <ø> (ø)
metrics-operator	?
scheduler	21.17% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

[StackScribe]

Good job. I left a few editorial suggestions and one structural suggestion for your consideration.

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
2.9% Duplication