Rework the installer to use `esbuild` and `tailwind`

[goncalotomas]

The current installer ships with a very rough first template that we need to rework. The new version will include a landing page, a global data folder, and will bundle properly configured tailwind and esbuild packages.

Since this change will only impact new projects generated by the framework, this doesn't necessarily need to be released with 0.3.0