add Markdown query

closes #25

src/anilist.ts

@@ -371,6 +371,13 @@ const UserAvatar = (query: ReturnType<typeof updateOperation>[], level: number)
     return this
   },
 })
+const Markdown = ({ query, level }: Fields<typeof updateOperation>) => ({
+  /** The parsed markdown as html */
+  withHtml() {
+    query[0] = query[0].set({ subField: "html", level })
+    return this
+  },
+})
 const AniChartUser = ({ query, level }: Fields<typeof updateOperation>) => ({
   withUser(fn: Fn<typeof User>) {
     query[0] = query[0].set({ subField: "user", level })
@@ -2984,8 +2991,23 @@ export const Client = function (auth?: { token: string }) {
           return this
         },
         /** Provide AniList markdown to be converted to html (Requires auth) */
-        Markdown() {
-          throw "To be Implemented"
+        Markdown(
+          args: {
+            /** The markdown to be parsed to html */
+            markdown: string
+          },
+          fn: (fields: ReturnType<typeof Markdown>) => void,
+        ) {
+          operation = operation.set({
+            subField: "Markdown",
+            hasSubField: true,
+            variables: args,
+            level: 1,
+          })
+          let tmpQuery
+          fn(Markdown({ query: tmpQuery = [operation], level: 2 }))
+          operation = tmpQuery[0]
+          return this
         },
         AniChartUser(fn: (fields: ReturnType<typeof AniChartUser>) => void) {
           operation = operation.set({ subField: "AniChartUser", hasSubField: true, level: 1 })