Add configurable KiCad field export for part parameters

Add a kicad_export checkbox to parameters, allowing users to control
which specifications appear as fields in the KiCad HTTP library API.
Parameters with kicad_export enabled are included using their formatted
value, without overwriting hardcoded fields like description or Stock.

src/Entity/Parameters/AbstractParameter.php

@@ -172,6 +172,13 @@ abstract class AbstractParameter extends AbstractNamedDBElement implements Uniqu
     #[Assert\Length(max: 255)]
     protected string $group = '';
 
+    /**
+     * @var bool Whether this parameter should be exported as a KiCad field in the EDA HTTP library API
+     */
+    #[Groups(['full', 'parameter:read', 'parameter:write', 'import'])]
+    #[ORM\Column(type: Types::BOOLEAN)]
+    protected bool $kicad_export = false;
+
     /**
      * Mapping is done in subclasses.
      *
@@ -471,6 +478,21 @@ abstract class AbstractParameter extends AbstractNamedDBElement implements Uniqu
         return static::ALLOWED_ELEMENT_CLASS;
     }
 
+    public function isKicadExport(): bool
+    {
+        return $this->kicad_export;
+    }
+
+    /**
+     * @return $this
+     */
+    public function setKicadExport(bool $kicad_export): self
+    {
+        $this->kicad_export = $kicad_export;
+
+        return $this;
+    }
+
     public function getComparableFields(): array
     {
         return ['name' => $this->name, 'group' => $this->group, 'element' => $this->element?->getId()];