[CORE][ImageEncoder] Add width and height back in attachment entity and allow for differently sized thumbs

The strategy adopted involves predicting the thumb size as we did in v2 before having vips resize

src/Entity/Attachment.php

@@ -55,6 +55,8 @@ class Attachment extends Entity
     private ?int $source;
     private ?int $scope;
     private ?int $size;
+    private ?int $width;
+    private ?int $height;
     private \DateTimeInterface $modified;
 
     public function setId(int $id): self
@@ -189,17 +191,40 @@ class Attachment extends Entity
         return $this->size;
     }
 
-    public function setModified(DateTimeInterface $modified): self
+    public function setWidth(?int $width): self
+    {
+        $this->width = $width;
+        return $this;
+    }
+
+    public function getWidth(): ?int
+    {
+        return $this->width;
+    }
+
+    public function setHeight(?int $height): self
+    {
+        $this->height = $height;
+        return $this;
+    }
+
+    public function getHeight(): ?int
+    {
+        return $this->height;
+    }
+
+    public function setModified(\DateTimeInterface $modified): self
     {
         $this->modified = $modified;
         return $this;
     }
 
-    public function getModified(): DateTimeInterface
+    public function getModified(): \DateTimeInterface
     {
         return $this->modified;
     }
 
+
     // }}} Autocode
 
     const URLHASH_ALGO  = 'sha256';
@@ -272,6 +297,8 @@ class Attachment extends Entity
                 'source'          => ['type' => 'int',       'default' => null, 'description' => 'Source of the Attachment (upload, TFN, embed)'],
                 'scope'           => ['type' => 'int',       'default' => null, 'description' => 'visibility scope for this attachment'],
                 'size'            => ['type' => 'int',       'description' => 'size of resource when available'],
+                'width'           => ['type' => 'int',       'description' => 'width in pixels, if it can be described as such and data is available'],
+                'height'          => ['type' => 'int',       'description' => 'height in pixels, if it can be described as such and data is available'],
                 'modified'        => ['type' => 'timestamp', 'not null' => true, 'default' => 'CURRENT_TIMESTAMP', 'description' => 'date this record was modified'],
             ],
             'primary key' => ['id'],