feat: update device and space services to use productType instead of deviceType and add query support for device retrieval by product type

src/device/dtos/get.device.dto.ts

@@ -58,7 +58,7 @@ export class GetDevicesBySpaceOrCommunityDto {
   })
   @IsString()
   @IsNotEmpty()
-  public deviceType: string;
+  public productType: string;
   @IsUUID('4', { message: 'Invalid space UUID format' })
   @IsOptional()
   spaceUuid?: string;