This is a mega-commit since everything is tied together (it is a framework migration after all),
but it mostly consists of renames and minor adjustments.
This includes the following:
- Move files to the appropriate locations for SvelteKit
- Change any "attractions" imports in docs to use "$lib"
- Define aliases in CSS without a custom importer (for client usage)
- Move SCSS of component docs (`.svx` files) into the component itself (path aliases didn't work here)
- Remove clipboard-polyfill

When segment is an empty string

Using the RegEx `\* @type \{([\S\r]*)\}\s+(\*\/\s+export let \w+);`
with replacement `$2: $1;`

Using the RegEx `\* @type \{(.*)\}\n.*(\s+export let \w+Class)`
with replacement `*/$2: $1`

that cannot be trivially inferred
Using RegEx `\* @type \{(.+)\}\s+\*\/(\n\s*export let \w+) =`
replaced with `*/$2: $1 =`

Mainly in local variables and function parameters
and remove empty JSDoc comments

Using the RegEx `(?<=<script lang="ts">)((.|\r|\n)+)\(\.\/docs`
replaced with `\n  import { base } from '$app/paths';$1({base}/docs`
inside the `routes` directory.

Followed by a simple replacement of `\(\.\/docs` with `({base}/docs`
to handle multiple occurences in one file

Workaround type issue

For the default caching mechanism to work, probably

Mostly just type-casting, ensuring compatibility, and
making use of flow analysis with type guards

update Sapper references

And `ComponentProps` as well