feat(api): Add exiftool config for Completed and MatureContent metadata properties

src/api/exiftool.config

@@ -0,0 +1,26 @@
+
+%Image::ExifTool::UserDefined = (
+    'Image::ExifTool::XMP::xmp' => {
+        Completed => {
+            Writable => 'boolean',  # Can be a boolean (True/False)
+            Groups => { 2 => 'Content' },
+        },
+        MatureContent => {
+            Writable => 'boolean',  # Can be a boolean (True/False)
+            Groups => { 2 => 'Content' },
+        },
+    },
+    
+    'Image::ExifTool::IPTC::ApplicationRecord' => {
+        161 => {
+            Name => 'Completed',
+            Format => 'string[0,16]',  # Store as a string (e.g., "Yes"/"No")
+        },
+        162 => {
+            Name => 'MatureContent',
+            Format => 'string[0,16]',  # Store as a string (e.g., "Yes"/"No")
+        },
+    },
+);
+
+1;  # End