### Problem to solve We are working to add additional chart types to GitLab, and we therefore need a way to define which type you want for a given chart. We can start with adding this support in YML based definition and database schema, and then add the option in the UI when we build the chart designer: https://gitlab.com/gitlab-org/gitlab-ee/issues/4452. The scope of this issue is to add support enabling line charts on our metrics dashboards. ### Intended users * Delaney, Development Team Lead, https://about.gitlab.com/handbook/marketing/product-marketing/roles-personas/#delaney-development-team-lead * Sasha, Software Developer, https://about.gitlab.com/handbook/marketing/product-marketing/roles-personas/#sasha-software-developer * Devon, DevOps Engineer, https://about.gitlab.com/handbook/marketing/product-marketing/roles-personas/#devon-devops-engineer * Sidney, Systems Administrator, https://about.gitlab.com/handbook/marketing/product-marketing/roles-personas/#sidney-systems-administrator * Sam, Security Analyst, https://about.gitlab.com/handbook/marketing/product-marketing/roles-personas/#sam-security-analyst ### Further Details This supports the [Metrics vision](https://about.gitlab.com/direction/monitor/apm/metrics/). ### Proposal As part of our effort of supporting all kinds of charts in our monitoring dashboards, we need to add support for [line charts](https://gitlab-org.gitlab.io/gitlab-ui/?path=/story/charts-line-chart--default) following the design pattern linked.