feat: implement entity mutable interface

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

lib/Providers/MessageProperties.php

@@ -112,20 +112,33 @@ class MessageProperties extends MessagePropertiesMutableAbstract {
         return $this;
     }
 
-    private static function normalizeFlag(string $flag): string
+    public function toImap(): array
     {
-        $flag = ltrim($flag, '\\');
+        $message = [];
 
-        return match (strtolower($flag)) {
-            'seen' => 'read',
-            'flagged' => 'flagged',
-            'answered' => 'answered',
-            'draft' => 'draft',
-            'deleted' => 'deleted',
-            default => strtolower($flag),
-        };
+        if (isset($this->data['flags'])) {
+            $message['flags'] = $this->data['flags'];
+        }
+
+        return $message;
     }
 
+    /**
+     * Hydrate from store array
+     */
+    public function fromStore(array $data): static {
+        $this->data = $data;
+        return $this;
+    }
+
+    /**
+     * Serialize to store array
+     */
+    public function toStore(): array {
+        return $this->data;
+    }
+
+
     /**
      * Convert a string to UTF-8 from the given charset.
      *
@@ -181,18 +194,4 @@ class MessageProperties extends MessagePropertiesMutableAbstract {
         $attachments[] = $part->toArray();
     }
 
-    /**
-     * Serialize to store array
-     */
-    public function toStore(): array {
-        return $this->data;
-    }
-
-    /**
-     * Hydrate from store array
-     */
-    public function fromStore(array $data): static {
-        $this->data = $data;
-        return $this;
-    }
 }