[FEATURE] Timeline of new release about prometheus-msteams HOT 4 OPEN

{{ define "teams.card" }}
{
  "@type": "MessageCard",
  "@context": "http://schema.org/extensions",
  "themeColor": "{{- if eq .Status "resolved" -}}2DC72D
                 {{- else if eq .Status "firing" -}}
                    {{- if eq .CommonLabels.severity "critical" -}}8C1A1A
                    {{- else if eq .CommonLabels.severity "warning" -}}FFA500
                    {{- else -}}808080{{- end -}}
                 {{- else -}}808080{{- end -}}",
  "summary": "{{- if eq .CommonAnnotations.summary "" -}}
                  {{- if eq .CommonAnnotations.message "" -}}
                    {{- if eq .CommonLabels.alertname "" -}}
                      Prometheus Alert
                    {{- else -}}
                      {{- .CommonLabels.alertname -}}
                    {{- end -}}
                  {{- else -}}
                    {{- .CommonAnnotations.message -}}
                  {{- end -}}
              {{- else -}}
                  {{- .CommonAnnotations.summary -}}
              {{- end -}}",
  "title": "Prometheus Alert ({{ .Status | title }})",
  "sections": [ {{$externalUrl := .ExternalURL}}
  {{- range $index, $alert := .Alerts }}{{- if $index }},{{- end }}
    {
      "activityTitle": "[{{ $alert.Annotations.description }}]({{ $externalUrl }})",
      "facts": [
        {{- range $key, $value := $alert.Annotations }}
        {
          {{- if ne $key "description" -}}
            "name": "{{ $key }}",
            "value": "{{ $value }}"
          {{- end -}}
        },
        {{- end -}}
        {{$c := counter}}{{ range $key, $value := $alert.Labels }}{{if call $c}},{{ end }}
        {
          "name": "{{ $key }}",
          "value": "{{ $value }}"
        }
        {{- end }}
      ],
      "markdown": true
    }
    {{- end }}
  ]
}
{{ end }}