Add 404 response type to Delete and Update actions in multiple controllers for improved error handling

Marechai.Server/Controllers/InstructionSetExtensionsByProcessorController.cs

@@ -61,6 +61,7 @@ public class InstructionSetExtensionsByProcessorController(MarechaiContext conte
     [Authorize(Roles = "Admin,UberAdmin")]
     [ProducesResponseType(StatusCodes.Status200OK)]
     [ProducesResponseType(StatusCodes.Status400BadRequest)]
+    [ProducesResponseType(StatusCodes.Status404NotFound)]
     public async Task<ActionResult> DeleteAsync(int id)
     {
         string userId = User.FindFirstValue(ClaimTypes.Sid);