fix(deps): replace node-sass with dart sass

[JoostKersjes]

Closes #75

Also upgraded eslint-plugin-vue to get rid of a dependency conflict.

I also had to nvm use 16 because something in the dev&build process is not Node 17+ compatible.

Here is the output to show the dev server working:

Click to expand!

joost@fate-nexus:~/projects/vue-a11y$ git status
On branch 75-project-setup-fails
Your branch is up to date with 'fork/75-project-setup-fails'.

nothing to commit, working tree clean
joost@fate-nexus:~/projects/vue-a11y$ npm install

up to date, audited 1849 packages in 2s

93 packages are looking for funding
  run `npm fund` for details

70 vulnerabilities (28 moderate, 37 high, 5 critical)

To address issues that do not require attention, run:
  npm audit fix

To address all issues possible (including breaking changes), run:
  npm audit fix --force

Some issues need review, and may require choosing
a different dependency.

Run `npm audit` for details.
joost@fate-nexus:~/projects/vue-a11y$ npm run dev

> [email protected] dev
> vuepress dev src --no-cache

wait Extracting site metadata...
tip Apply local theme at /home/joost/projects/vue-a11y/src/.vuepress/theme...
tip Apply theme local ...
tip Apply plugin container (i.e. "vuepress-plugin-container") ...
tip Apply plugin @vuepress/register-components (i.e. "@vuepress/plugin-register-components") ...
tip Apply plugin @vuepress/blog (i.e. "@vuepress/plugin-blog") ...
tip Apply plugin sitemap (i.e. "vuepress-plugin-sitemap") ...
tip Apply plugin feed (i.e. "vuepress-plugin-feed") ...
tip Apply plugin @vuepress/nprogress (i.e. "@vuepress/plugin-nprogress") ...
tip Apply plugin canonical (i.e. "vuepress-plugin-canonical") ...
tip Apply plugin @vuepress/google-analytics (i.e. "@vuepress/plugin-google-analytics") ...
tip Apply plugin @vuepress/pwa (i.e. "@vuepress/plugin-pwa") ...
tip Apply plugin @vuepress/search (i.e. "@vuepress/plugin-search") ...
tip Apply plugin @goy/svg-icons (i.e. "@goy/vuepress-plugin-svg-icons") ...
tip Apply plugin @vuepress/last-updated (i.e. "@vuepress/plugin-last-updated") ...
success vuepress-plugin-feed rss2 link added to siteConfig.head
success vuepress-plugin-feed atom1 link added to siteConfig.head
success vuepress-plugin-feed json1 link added to siteConfig.head
tip Clean cache...


● Client █████████████████████████ building (69%) 1035/1038 modules 3 active
 node_modules/ms/index.js

ℹ ｢wds｣: Project is running at http://0.0.0.0:8080/
ℹ ｢wds｣: webpack output is served from /
ℹ ｢wds｣: Content not from webpack is served from /home/joost/projects/vue-a11y/src/.vuepress/public
ℹ ｢wds｣: 404s will fallback to /index.html
Browserslist: caniuse-lite is outdated. Please run:
npx browserslist@latest --update-db

Why you should do it regularly:
https://github.com/browserslist/browserslist#browsers-data-updating
^C