Onboarding (#132)

* Initial onboarding

* Update OnboardingModal.vue

* Add finish

* Animation

* Automatic opening

* Move onboarding icon to outside of main appbar

* Run lint

* run fmt

* mostly finish

* Finish onboarding

* fix onboarding bug + linux build

* fix build again

* Add back window shadows

---------

Co-authored-by: Geometrically <18202329+Geometrically@users.noreply.github.com>
Co-authored-by: Jai A <jaiagr+gpg@pm.me>
Co-authored-by: Jai A <jai@modrinth.com>

theseus_gui/src/pages/instance/Index.vue

@@ -221,7 +221,6 @@ const handleRightClick = (event) => {
 }
 
 const handleOptionsClick = async (args) => {
-  console.log(args)
   switch (args.option) {
     case 'play':
       await startInstance('InstancePageContextMenu')