Add PSR HTTP Message Interfaces and Dependencies

- Implemented StreamInterface, UploadedFileInterface, and UriInterface as per PSR standards.
- Added getallheaders function to retrieve HTTP headers in a compatible manner.
- Included LICENSE files for ralouphie/getallheaders and symfony/deprecation-contracts.
- Introduced function for triggering deprecation notices in Symfony.

wp-content/plugins/autopoly-ai-translation-for-polylang-pro/includes/block-translation-rules/default-allow-metafields.json

@@ -0,0 +1,71 @@
+{
+    "_yoast_wpseo_title": {
+        "type": "string"
+    },
+    "_yoast_wpseo_focuskw": {
+        "type": "string"
+    },
+    "_yoast_wpseo_metadesc": {
+        "type": "string"
+    },
+    "_yoast_wpseo_bctitle": {
+        "type": "string"
+    },
+    "_yoast_wpseo_opengraph-title": {
+        "type": "string"
+    },
+    "_yoast_wpseo_opengraph-description": {
+        "type": "string"
+    },
+    "_yoast_wpseo_twitter-title": {
+        "type": "string"
+    },
+    "_yoast_wpseo_twitter-description": {
+        "type": "string"
+    },
+    "rank_math_title": {
+        "type": "string"
+    },
+    "rank_math_description": {
+        "type": "string"
+    },
+    "rank_math_focus_keyword": {
+        "type": "string"
+    },
+    "rank_math_facebook_title": {
+        "type": "string"
+    },
+    "rank_math_facebook_description": {
+        "type": "string"
+    },
+    "rank_math_twitter_title": {
+        "type": "string"
+    },
+    "rank_math_twitter_description": {
+        "type": "string"
+    },
+    "rank_math_breadcrumb_title": {
+        "type": "string"
+    },
+    "_seopress_titles_title": {
+        "type": "string"
+    },
+    "_seopress_titles_desc": {
+        "type": "string"
+    },
+    "_seopress_social_fb_title": {
+        "type": "string"
+    },
+    "_seopress_social_fb_desc": {
+        "type": "string"
+    },
+    "_seopress_social_twitter_title": {
+        "type": "string"
+    },
+    "_seopress_social_twitter_desc": {
+        "type": "string"
+    },
+    "_seopress_analysis_target_kw": {
+        "type": "string"
+    }
+}