Add Makefile and helm-docs for value injection into readme

Adjust readme, add comments to values

Bump chart version

Makefile

@@ -0,0 +1,40 @@
+DOCS_IMAGE_VERSION="v1.14.2"
+
+LINT_IMAGE_VERSION="v3.8.0"
+
+# Charts's path relative to the current directory.
+CHARTS := $(wildcard ./charts/*)
+
+CHARTS_NAMES := $(notdir $(CHARTS))
+
+.PHONY: lint
+lint: helm-deps-update $(addprefix lint-, $(CHARTS_NAMES))
+
+lint-%:
+	@docker run \
+	-it \
+	-e HOME=/home/ct \
+	--mount type=tmpfs,destination=/home/ct \
+	--workdir=/data \
+	--volume $$(pwd):/data \
+	-u $$(id -u) \
+	quay.io/helmpack/chart-testing:$(LINT_IMAGE_VERSION) \
+	ct lint --config ./ct.yaml --charts ./charts/$*
+
+.PHONY: docs
+docs: $(addprefix docs-, $(CHARTS_NAMES))
+
+docs-%:
+	@docker run \
+	--rm \
+	--workdir=/helm-docs \
+	--volume "$$(pwd):/helm-docs" \
+	-u $$(id -u) \
+	jnorwood/helm-docs:$(DOCS_IMAGE_VERSION) \
+	helm-docs -c ./charts/$* -t ./README.gotmpl -o ./README.md
+
+.PHONY: helm-deps-update
+helm-deps-update: $(addprefix helm-deps-update-, $(CHARTS_NAMES))
+
+helm-deps-update-%:
+	helm dependency update ./charts/$*