Added Helm chart for argocd app of apps, made the setup more configurable

kubernetes/helm_charts/argocd-base-application/Chart.yaml

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+apiVersion: v2
+name: argocd-base-application
+description: Helm chart for installing the ArgoCD base application
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+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: 0.1.0
+
+# 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.
+appVersion: "1.0"

kubernetes/helm_charts/argocd-base-application/templates/argocd-base-application.yaml

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+apiVersion: argoproj.io/v1alpha1
+kind: Application
+metadata:
+  name: applications
+  namespace: argocd
+  finalizers:
+  - resources-finalizer.argocd.argoproj.io
+spec:
+  project: default
+  destination:
+    server: https://kubernetes.default.svc
+    namespace: argocd
+  source:
+    {{- toYaml .Values.source | nindent 4 }}
+  syncPolicy:
+    {{- toYaml .Values.syncPolicy | nindent 4 }}

kubernetes/helm_charts/argocd-base-application/values.yaml

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+source: {}
+syncPolicy: {}