Implement loading (#104)

* Implement loading

* LoadingBar

* Run linter

* Update App.vue

* Loading bar all the things

* Update SplashScreen.vue

* Update SplashScreen.vue

* Update App.vue

* initial revert

* Update Instance.vue

* revert css

* Fix instance

* More reverting

* Run lint

* Finalize changes

* Revert "Merge branch 'master' into loading"

This reverts commit 3014e765fb6fb343f3030fd8a822edd97fb2af41, reversing
changes made to b780e859d2b53a203eb3561ba3be88af083d9c15.

* Fix loading issues

* fix lint

* Revert "Revert "Merge branch 'master' into loading""

This reverts commit 971ef8466613579b7f523edbd25b692df62d0f86.

---------

Co-authored-by: Jai A <jaiagr+gpg@pm.me>

theseus_gui/src/App.vue

@@ -1,5 +1,5 @@
 <script setup>
-import { onMounted } from 'vue'
+import { onMounted, ref } from 'vue'
 import { RouterView, RouterLink } from 'vue-router'
 import { HomeIcon, SearchIcon, LibraryIcon, PlusIcon, SettingsIcon, Button } from 'omorphia'
 import { useLoading, useTheming } from '@/store/state'
@@ -8,21 +8,31 @@ import InstanceCreationModal from '@/components/ui/InstanceCreationModal.vue'
 import { get } from '@/helpers/settings'
 import Breadcrumbs from '@/components/ui/Breadcrumbs.vue'
 import RunningAppBar from '@/components/ui/RunningAppBar.vue'
+import SplashScreen from '@/components/ui/SplashScreen.vue'
 import ModrinthLoadingIndicator from '@/components/modrinth-loading-indicator'
 
 const themeStore = useTheming()
 
+const isLoading = ref(true)
 onMounted(async () => {
   const { settings, collapsed_navigation } = await get()
   themeStore.setThemeState(settings)
   themeStore.collapsedNavigation = collapsed_navigation
 })
 
+defineExpose({
+  initialize: async () => {
+    isLoading.value = false
+    const { theme } = await get()
+    themeStore.setThemeState(theme)
+  },
+})
 const loading = useLoading()
 </script>
 
 <template>
-  <div class="container">
+  <SplashScreen v-if="isLoading" app-loading />
+  <div v-else class="container">
     <div class="nav-container" :class="{ expanded: !themeStore.collapsedNavigation }">
       <div class="nav-section">
         <suspense>
@@ -150,7 +160,6 @@ const loading = useLoading()
       text-align: center;
       padding: 0 0 0 1rem;
       height: 3.25rem;
-      z-index: 11;
 
       .navigation-controls {
         display: inherit;
@@ -222,7 +231,6 @@ const loading = useLoading()
   flex-direction: column;
   align-items: center;
   justify-content: space-between;
-  z-index: 10;
   height: 100%;
   box-shadow: var(--shadow-inset-sm), var(--shadow-floating);
   padding: 1rem;