add initial marp implementation with sample content and build configuration

node_modules/markdown-it-front-matter/index.d.ts

@@ -0,0 +1,9 @@
+declare module 'markdown-it-front-matter' {
+  import MarkdownIt from 'markdown-it/lib'
+
+  namespace markdownItFrontMatter {
+    type FrontMatterPluginOptions = (rawMeta: string) => void
+  }
+  const markdownItFrontMatter: MarkdownIt.PluginWithOptions<markdownItFrontMatter.FrontMatterPluginOptions>
+  export = markdownItFrontMatter
+}