Add Support for Extensions in Str::markdown Method (#680)

* Add Support for Extensions in Str::markdown Method

* feat: Add support for extensions in Str::markdown method

* Add Number::pairs and Number:: clamp

* Add Number::pairs

* Adds tests

---------

Co-authored-by: Deeka Wong <[email protected]>

output/Hyperf/Stringable/Str.php

@@ -33,7 +33,7 @@ public static function createUuidsNormally()
      * @param string $string
      * @return string
      */
-    public static function markdown($string, array $options = [])
+    public static function markdown($string, array $options = [], array $extensions = [])
     {
     }
 

output/Hyperf/Stringable/Stringable.php

@@ -18,7 +18,7 @@ class Stringable
      *
      * @return static
      */
-    public function markdown(array $options = [])
+    public function markdown(array $options = [], array $extensions = [])
     {
     }
 

src/StrMixin.php

@@ -51,7 +51,16 @@ public function inlineMarkdown()
 
     public function markdown()
     {
-        return fn ($string, array $options = []) => (string) (new GithubFlavoredMarkdownConverter($options))->convert($string);
+        return function ($string, array $options = [], array $extensions = []) {
+            $converter = new GithubFlavoredMarkdownConverter($options);
+            $environment = $converter->getEnvironment();
+
+            foreach ($extensions as $extension) {
+                $environment->addExtension($extension);
+            }
+
+            return (string) $converter->convert($string);
+        };
     }
 
     public function transliterate()

src/StringableMixin.php

@@ -30,7 +30,7 @@ public function inlineMarkdown()
     public function markdown()
     {
         /* @phpstan-ignore-next-line */
-        return fn (array $options = []) => new static(Str::markdown($this->value, $options));
+        return fn (array $options = [], array $extensions = []) => new static(Str::markdown($this->value, $options, $extensions));
     }
 
     public function toHtmlString()