Remove old manifests and replace with jsonnet build

Makefile

README.md

example-dist/base/kube-prometheus.jsonnet

example-dist/bootkube/.gitignore

example-dist/bootkube/kube-prometheus.jsonnet

example-dist/kubeadm/.gitignore

example-dist/kubeadm/kube-prometheus.jsonnet

examples/basic-auth/secrets.yaml

examples/basic-auth/service-monitor.yaml

examples/example-app/example-app.yaml

...metheus-frontend-alertmanager-discovery-role-binding.yaml

...-app/prometheus-frontend-alertmanager-discovery-role.yaml

examples/example-app/prometheus-frontend-role-binding.yaml

examples/example-app/prometheus-frontend-role.yaml

...ples/example-app/prometheus-frontend-service-account.yaml

examples/example-app/prometheus-frontend-svc.yaml

examples/example-app/prometheus-frontend.yaml

examples/example-app/servicemonitor-frontend.yaml

experimental/custom-metrics-api/.gitignore

experimental/custom-metrics-api/README.md