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/src/state/settings.rs

@@ -32,6 +32,8 @@ pub struct Settings {
     pub opt_out_analytics: bool,
     #[serde(default)]
     pub advanced_rendering: bool,
+    #[serde(default)]
+    pub onboarded: bool,
 }
 
 impl Default for Settings {
@@ -52,6 +54,7 @@ impl Default for Settings {
             developer_mode: false,
             opt_out_analytics: false,
             advanced_rendering: true,
+            onboarded: false,
         }
     }
 }