Markdown: Replace rendering library (#17686)

* Replace remarkable with marked

* Add wrapper and options for marked

packages/grafana-data/src/utils/index.ts

@@ -1 +1,2 @@
 export * from './string';
+export * from './markdown';

packages/grafana-data/src/utils/markdown.ts

@@ -0,0 +1,20 @@
+import marked, { MarkedOptions } from 'marked';
+
+const defaultMarkedOptions: MarkedOptions = {
+  renderer: new marked.Renderer(),
+  pedantic: false,
+  gfm: true,
+  tables: true,
+  sanitize: true,
+  smartLists: true,
+  smartypants: false,
+  xhtml: false,
+};
+
+export function setMarkdownOptions(optionsOverride?: MarkedOptions) {
+  marked.setOptions({ ...defaultMarkedOptions, ...optionsOverride });
+}
+
+export function renderMarkdown(str: string): string {
+  return marked(str);
+}