feat(prettier): support astro and mdx formatting

- Added prettier-plugin-astro as dev dependency
- Config prettier to explicitly use mdx parser when formatting mdx files

Signed-off-by: Noa Virellia <noa@requiem.garden>

.prettierrc.json

@@ -1,4 +1,21 @@
 {
+    "plugins": [
+        "prettier-plugin-astro"
+    ],
+    "overrides": [
+        {
+            "files": "*.astro",
+            "options": {
+                "parser": "astro"
+            }
+        },
+        {
+            "files": "*.mdx",
+            "options": {
+                "parser": "mdx"
+            }
+        }
+    ],
     "printWidth": 120,
     "tabWidth": 4,
     "useTabs": false,
@@ -18,4 +35,4 @@
     "endOfLine": "lf",
     "embeddedLanguageFormatting": "auto",
     "singleAttributePerLine": false
-}
+}