Feature request: output octal escape sequences from Escape_string

Escape_string outputs hexadecimal escape sequences, eg. `\x13`. I'd like an option to output octal escape sequences, eg. `\023`.

Example recipe:

From_Base64('A-Za-z0-9+/=',true)
Escape_string('Special chars','Single',false,true,false)

Input:

MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE01EAhx4o0zPQrXTcYjgCt4MVFsT0Pwjzb1RwrM0lhWDlxAYPP6/gyMCXNkOn/7KFsjL7rwk78tHMpY8rXn8AYg==

Expected:

0Y0\023\006\007*\206H\316=\002\001\006\010*\206H\316=\003\001\007\003B\000\004\323Q\000\207\036(\3233\320\255t\334b8\002\267\203\025\026\304\364?\010\363oTp\254\315%\205`\345\304\006\017?\257\340\310\300\2276C\247\377\262\205\2622\373\257\t;\362\321\314\245\217+^\177\000b

What actually happens:

0Y0\x13\x06\x07*\x86H\xce=\x02\x01\x06\b*\x86H\xce=\x03\x01\x07\x03B\0\x04\xd3Q\0\x87\x1e(\xd33\xd0\xadt\xdcb8\x02\xb7\x83\x15\x16\xc4\xf4?\b\xf3oTp\xac\xcd%\x85`\xe5\xc4\x06\x0f?\xaf\xe0\xc8\xc0\x976C\xa7\xff\xb2\x85\xb22\xfb\xaf\t;\xf2\xd1\xcc\xa5\x8f+^\x7f\0b

Start at the Escape_string operation entry point and compare its current hexadecimal output with the supplied recipe and expected octal output. Done means an option produces the requested octal escape sequences while existing hexadecimal behavior remains available; verify the recipe's output against the example.

Written by the indexing model from the issue text.