Cleanup old dependencies and fix RemarkOfm import

composables/useMarkdown.ts

@@ -0,0 +1,25 @@
+import { createMarkdownParser } from "@nuxtjs/mdc/runtime/parser/index";
+import RemarkBreaks from "remark-breaks";
+import RemarkOfm from "remark-ofm";
+
+export default function useMarkdown(): Awaited<ReturnType<typeof createMarkdownParser>>
+{
+    let parser: Awaited<ReturnType<typeof createMarkdownParser>>
+
+    const parse = async (markdown: string) => {
+        if (!parser) 
+        {
+            parser = await createMarkdownParser({
+                remark: {
+                    plugins: {
+                        'remark-breaks': { instance: RemarkBreaks },
+                        'remark-ofm': { instance: RemarkOfm }
+                    }
+                },
+            });
+        }
+        return parser(markdown);
+    }
+
+    return parse;
+}