Add extendable-workflow chart

Signed-off-by: gabriel-farache <[email protected]>

charts/extendable-workflow/.helmignore

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+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

charts/extendable-workflow/Chart.yaml

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+apiVersion: v2
+name: extendable-workflow
+description: A Helm chart for the extendable-workflow serverless workflow
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 1.3.0-rc1
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+# It is recommended to use it with quotes.
+appVersion: "1.16.0"
+
+icon: https://raw.githubusercontent.com/parodos-dev/parodos-dev.github.io/main/assets/images/WO_black.svg

charts/extendable-workflow/README.md

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+See [documentation for the workflow](../../docs/main/extendable-workflow/README.md)

charts/extendable-workflow/values.schema.json

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+{
+  "$schema": "https://json-schema.org/draft/2019-09/schema",
+  "$id": "http://example.com/example.json",
+  "type": "object",
+  "default": {},
+  "title": "Root Schema",
+  "required": [],
+  "properties": {},
+  "examples": [{}]
+}

docs/main/extendable-workflow/README.md

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+
+extendable-workflow
+===========
+
+A Helm chart for the extendable-workflow serverless workflow
+
+The extendable-workflow workflow is a basic workflow without any external dependencies.
+Its purpose is to demonstrate functionality of the workflows system.
+
+# Helm Configuration
+
+The following table lists the configurable parameters of the extendable-workflow chart and their default values.
+
+| Parameter                | Description             | Default        |
+| ------------------------ | ----------------------- | -------------- |
+|                          |                         |                |
+
+
+# Installation
+## Persistence pre-requisites
+If persistence is enabled, you must have a PostgreSQL instance running in the cluster, in the same `namespace` as the workflows.
+
+A `secret` containing the instance credentials must exists as well. 
+
+See https://www.parodos.dev/orchestrator-helm-chart/postgresql on how to install a PostgreSQL instance. Please follow the section detailing how to install using helm. In this document, a `secret` holding the credentials is created.
+
+## Prerequisites 
+Set `TARGET_NS` to the target namespace:
+```console
+TARGET_NS=sonataflow-infra
+```
+## Installing helm chart 
+
+```console
+helm repo add orchestrator-workflows https://parodos.dev/serverless-workflows-config
+helm install extendable-workflow orchestrator-workflows/extendable-workflow -n ${TARGET_NS}
+```
+
+Verify the extendable-workflow workflow is ready:
+```console
+oc wait sonataflow extendable-workflow -n -n ${TARGET_NS} --for=condition=Running=True --timeout=5m
+sonataflow.sonataflow.org/extendable-workflow condition met
+```