change "use prompt" commadn shortcut to cmd+alt+/

Author: legomushroom

src/vs/workbench/contrib/chat/browser/promptSyntax/contributions/usePromptCommand.ts

@@ -20,12 +20,14 @@ import { IChatAttachPromptActionOptions, ATTACH_PROMPT_ACTION_ID } from '../../a
 /**
  * Command ID of the "Use Prompt" command.
  */
-const COMMAND_ID = 'workbench.command.prompts.use';
+export const COMMAND_ID = 'workbench.command.prompts.use';
 
 /**
  * Keybinding of the "Use Prompt" command.
+ * The `cmd + /` is the current keybinding for 'attachment', so we use
+ * the `alt` key modifier to convey the "prompt attachment" action.
  */
-const COMMAND_KEY_BINDING = KeyMod.Alt | KeyMod.Shift | KeyCode.KeyE;
+const COMMAND_KEY_BINDING = KeyMod.CtrlCmd | KeyCode.Slash | KeyMod.Alt;
 
 /**
  * Implementation of the "Use Prompt" command. The command works in the following way.