✨ feat: Add function to highlight specific blockquote nodes in Markdown

This commit introduces a new function called "remarkGfmHighlight" that utilizes the "unist-util-visit" library to visit and manipulate a Markdown tree. The function searches for "blockquote" nodes and within those nodes, it checks for the first "strong" node. If the starting column of the "strong" node is 3, it checks the text content and assigns a corresponding value from the "gfmHighlight" array to the "value" variable.

Changes Made:
- Added "remarkGfmHighlight" function to highlight specific blockquote nodes in Markdown.

src/remarklint/remarkGfmHighlight.ts

@@ -10,15 +10,13 @@ export function remarkGfmHighlight() {
   return async (tree: any) => {
     const { visit } = await import('unist-util-visit');
     visit(tree, 'blockquote', (node: any) => {
-      visit(node, 'strong', (subnode: any) => {
-        let value = '';
-
+      visit(node.children[0], 'strong', (subnode: any) => {
+        if (subnode.position.start.column !== 3) return;
+        let value: string;
         visit(subnode, 'text', (textnode: any) => {
           if (['Note', 'Tip', 'Important', 'Warning', 'Caution'].includes(textnode.value)) {
             for (const item of gfmHighlight) {
-              if (item.from === textnode.value) {
-                value = item.to;
-              }
+              if (item.from === textnode.value) value = item.to;
             }
           }
           if (value) {