RTL support for konsta UI

[ibilux]

Add support for multi-directional layouts for Konsta UI with tailwind rtl and ltr modifiers.
Trying to fix this issue #104.
A complete example can be found here:
https://github.com/ibilux/konsta-svelte-rtl

This PR is tested with the components showing the pictures below:

LTR	RTL

[ibilux]

A link to the preview:
https://ibilux-didactic-waddle-46jg4p67xxfq4x6-5173.preview.app.github.dev/

Preview:

[ibilux]

@nolimits4web tailwind has marked rtl and ltr variants as stable in v3.3.0.

[vltansky]

@ibilux why not to use logical properties instead of rtl/ltr?

easier to maintain and solid browser support.

https://tailwindcss.com/blog/tailwindcss-v3-3#simplified-rtl-support-with-logical-properties

[ibilux]

@vltansky Yes, you are right. And I started testing them yesterday.
But as you can see the link you shared is posted in Tuesday, March 28, 2023, and it's before I started this PR.

[ibilux]

@nolimits4web I have changed the code to use logical properties for inline direction instead of modifiers.
Everything seems to be working.
Please re-check the plugin-safe-areas.js file, cause I'm not sure if I did it right.

[nolimits4web]

Thanks @ibilux, will check it on a days!