Add a reamde in the helm chart

It is going to be displayed in artifacthub.io

Co-authored-by: Danail Branekov <[email protected]>

Author: georgethebeatle

helm/korifi/README.md

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+# Korifi Helm Chart
+Korifi is a kubernetes native implementation of the Cloud Foundry V3 API. For more information check out the [project on github](https://github.com/cloudfoundry/korifi)
+
+# Quick Start
+
+If you want to try out Korifi on your local machine we recommend [installing korifi on kind](https://github.com/cloudfoundry/korifi/blob/main/INSTALL.kind.md)
+
+# Installation
+
+1. Make sure [dependencies](https://github.com/cloudfoundry/korifi/blob/main/INSTALL.md#dependencies) are installed
+
+
+2. Add the korifi repository:
+
+```
+helm repo add korifi https://cloudfoundry.github.io/korifi/
+```
+
+3. Install the korifi helm chart
+
+```
+helm install my-korifi korifi/korifi
+    --create-namespace \
+    --namespace=korifi \
+    --set=generateIngressCertificates=true \
+    --set=adminUserName=cf-admin \
+    --set=api.apiServer.url="api.korifi.example.org" \
+    --set=defaultAppDomainName="apps.korifi.example.org" \
+    --set=containerRepositoryPrefix=index.docker.io/my-organization/ \
+    --set=kpackImageBuilder.builderRepository=index.docker.io/my-organization/kpack-builder \
+    --set=networking.gatewayClass=contour \
+    --wait
+```
+
+Refer to the [installation guide](https://github.com/cloudfoundry/korifi/blob/main/INSTALL.md) for more information on how to configure the helm values