add possibility of the generic app (#201)

docs/k8s_apps/generic_app.md

@@ -0,0 +1,39 @@
+Sometimes you need a very generic app quickly to test something. This Argo CD ApplicationSet does just that: creates a basic deployment for you to use for testing a docker image that has no helm chart.
+
+## Example config
+
+```yaml
+apps:
+  generic_app:
+    enabled: false
+    description: |
+      A generic Argo CD ApplicationSet using a generic app helm chart:
+      [link=https://github.com/small-hack/generic-app-helm]https://github.com/small-hack/generic-app-helm[/link]
+
+      You can also use this as a template and change the name of the app to your own app name.
+    argo:
+      secret_keys:
+        # the name of the release, namespace, and project for the argocd app
+        app_name: "generic-app"
+        # change only if you need to use another image registry instead of docker.io
+        image_registry: "docker.io"
+        # change this to the image repo you want to deploy
+        image_repo: "nginx"
+        # change this the image tag you want to deploy
+        image_tag: "latest"
+      repo: https://github.com/small-hack/argocd-apps
+      path: generic-app/
+      revision: main
+      # you could change this to your app name
+      namespace: generic-app
+      directory_recursion: false
+      project:
+        # you could change this to your app name
+        name: generic-app
+        source_repos:
+          - https://small-hack.github.io/generic-app-helm
+        destination:
+          # you could change this to your app name
+          namespaces:
+            - generic-app
+```

mkdocs.yaml

@@ -91,6 +91,7 @@ nav:
       - Longhorn: k8s_apps/experimental/longhorn.md
       - MinIO: k8s_apps/experimental/minio.md
       - Zalando Postgress Operator: k8s_apps/experimental/postgres_operator.md
+    - Generic App: k8s_apps/generic_app.md
     - Generic Device Plugin: k8s_apps/generic_device_plugin.md
     - Home Assistant: k8s_apps/home_assistant.md
     - Ingress Nginx: k8s_apps/ingress_nginx.md