File previewer (#10260)

Add a file previewer for pdf, image, doc, xls

<img width="991" alt="Screenshot 2025-02-17 at 15 03 10"
src="https://github.com/user-attachments/assets/7516c13d-d6cb-4a10-b10f-b422268d223b"
/>

packages/twenty-server/src/engine/core-modules/environment/environment-variables.ts

@@ -970,6 +970,15 @@ export class EnvironmentVariables {
   @CastToPositiveNumber()
   @IsOptional()
   HEALTH_MONITORING_TIME_WINDOW_IN_MINUTES = 5;
+
+  @EnvironmentVariablesMetadata({
+    group: EnvironmentVariablesGroup.Other,
+    description: 'Enable or disable the attachment preview feature',
+  })
+  @CastToBoolean()
+  @IsOptional()
+  @IsBoolean()
+  IS_ATTACHMENT_PREVIEW_ENABLED = true;
 }
 
 export const validate = (