feat: change commands to accept args

lua/chatgpt_nvim/prompts.lua

@@ -74,16 +74,18 @@ local M = {
 
     ```yaml
     commands:
-      - command: "list"
-        dir: "some/directory"
+      - command: "ls"
+        args: ["-l", "path/to/directory"]
 
       - command: "grep"
-        pattern: "searchString"
-        target: "path/to/file/or/directory"
+        args: ["-r", "searchString", "path/to/file/or/directory"]
     ```
 
-    The "ls" command uses the system's 'ls' command to list directory contents.
-    When these commands are present and enable_debug_commands is true, I'll execute them and return the results in the clipboard.
+    The "ls" command uses the system's 'ls' command to list directory contents. You can pass flags or additional arguments in `args`.
+    The "grep" command searches for a given pattern in files or directories, again receiving flags or additional arguments in `args`.
+    If you omit `args` for grep, you can still use the older format with `pattern` and `target` for backward compatibility.
+
+    When these commands are present and `enable_debug_commands` is true, I'll execute them and return the results in the clipboard.
   ]]
 }