Add tailwind config for Tailwind LSP support in templ files

[BlueBlizzardd]

Problem/Feature

When making a Tailwind template which uses HTMX by default, there isn't any config file that signals that the LSP should be active on templ files, which means that you have to manually add it. This change aims to fix that, though I'm not sure if this change is needed when making other templates using Tailwind too, if so, I'm willing to update this PR to change those as well.

Description of Changes:

• added a new cmd/template/advanced/files/htmx/tailwind folder and a cmd/template/advanced/files/htmx/tailwind/tailwind.config.js.tmpl file
• added the tailwind.config.js.tmpl file to cmd/templates/advanced/routes.go
• added the file to program.go

Checklist

• I have self-reviewed the changes being requested

[Melkeydev]

LGTM