Unify all deliverables under a single verison (#614)

* ci: combine all publish workflows into one

* chore: read version for all subcharts from values.global.chartVersion

* fix: add eventhandler to global Chart.yaml

* chore: set values.global.chartVersion in buildChart script

* ci: replace __appVersion__ in all Chart.yaml files

* chore: improve explaining comment

.ci/helm/buildChart.js

@@ -6,4 +6,8 @@ import { getRequiredEnvVar } from "../lib.js";
 const version = getRequiredEnvVar("VERSION");
 
 await $`helm dependency update helm`;
+
+// replace <<app_version>> with the value of `version` in all Chart.yaml files in helm folder
+await $`find helm -name Chart.yaml -exec sed -i -e 's/__app_version__/${version}/g' {} +`;
+
 await $`helm package --version ${version} helm`;