fix(create-tool): generate toolDir relative to cwd

[DemetriSam]

Fixes #235
The issue stems from the createFolderStructure function using recursiveCreate('.', 0), which causes all folder paths to be resolved relative to process.cwd().

As a result, calling .split(sep) on an absolute path and feeding it to recursiveCreate('.', ...) leads to the full absolute path being recreated inside the current directory, e.g.:

$PWD/home/user/...

Suggested Fix
Before passing toolDir to createFolderStructure(...), normalize it to be relative to the current working directory, e.g.:

import { relative } from 'path';

createFolderStructure(relative('.', toolDir), folder.split(sep).length);

This allows the function to create directories in the correct location relative to the actual working directory.