related to #8505.

this issue is here to track the work to be done on the help commands from nu-std

• Speed - We can land with having slight speed differences because we can always optimize that later.
• help commands has different columns (no command_type) column and the signatures column is different.
• help -f highlights too many columns in script form.
  • FIX: filter the std help ... by name, usage and search terms #9035
• match sort order of rust commands
  • FIX: give same order in std help ... as in help ... #9034

Note
see #8505 (comment)

• exported environment blocks do not show up well

Note
see #8505 (comment)

• 🔵 i thought of adding a --raw option to allow custom data processing by not expanding the help page found, but instead return the raw data
• 🟡 with the builtin, help externs open returns the help open even though open is not an external => the new std help externs open does not
• 🔴 in the built-in help externs, we have all the registered flags that show up => as they are not available in $nu, i do not know how to do that

Note
see #8505 (comment)

• translate the rust tests to nu-std which are being removed in REFACTOR: remove the help commands #8611