App architecture modifications.

Now GUI and the app itself is divided into two different binaries.
The app also provides system tray icon.
Whereas the GUI can be used to configure the app.

gui/src/pages/index.svelte

@@ -0,0 +1,71 @@
+<script lang="ts">
+    import SearchBar from "@/components/elements/SearchBar.svelte"
+    import ArcReactor from "@/components/elements/ArcReactor.svelte"
+    import HDivider from "@/components/elements/HDivider.svelte"
+    import Stats from "@/components/elements/Stats.svelte"
+    import Footer from "@/components/Footer.svelte"
+
+    import { Notification, Space  } from '@svelteuidev/core'
+    import { InfoCircled } from 'radix-icons-svelte'
+    import { onMount, onDestroy } from 'svelte'
+
+    onMount(async () => {
+        document.body.classList.add('assist-page');
+	});
+
+    onDestroy(async () => {
+        document.body.classList.remove('assist-page');
+	});
+
+    import { is_listening } from "@/stores"
+    let is_listening__val: boolean;
+    is_listening.subscribe(value => {
+        is_listening__val = value;
+    });
+</script>
+
+<HDivider />
+{#if !is_listening__val}
+<Notification title='Внимание!' icon={InfoCircled} color='cyan' withCloseButton={false}>
+В данный момент ассистент не прослушивает команды.<br />
+Пожалуйста, <a href="/settings">перейдите в настройки</a> и введите ключ Picovoice.
+</Notification>
+<!-- <SearchBar /> -->
+{:else}
+<!-- <SearchBar /> -->
+<ArcReactor />
+{/if}
+<HDivider no_margin />
+<Stats />
+<Footer />
+
+
+<!-- 
+<Title order={1}>This is h1 title</Title>
+<Title order={1} variant='gradient' gradient={{from: 'blue', to: 'red', deg: 45}}>This is h1 title with a twist</Title>
+
+<Menu>
+  <Button slot="control" variant="gradient" gradient={{ from: 'blue', to: 'teal', deg: 50 }} radius="md" size="md">Toggle Menu</Button>
+    <Menu.Label>Application</Menu.Label>
+    <Menu.Item icon={Gear}>Settings</Menu.Item>
+    <Menu.Item icon={ChatBubble}>Messages</Menu.Item>
+    <Menu.Item icon={Camera}>Gallery</Menu.Item>
+    <Menu.Item icon={MagnifyingGlass}>
+        <svelte:fragment slot='rightSection'>
+            <Text size="xs" color="dimmed">⌘K</Text>
+        </svelte:fragment>
+        Search
+    </Menu.Item>
+
+    <Divider />
+
+    <Menu.Label>Danger zone</Menu.Label>
+    <Menu.Item icon={Width}>Transfer my data</Menu.Item>
+    <Menu.Item color="red" icon={Trash}>Delete my account</Menu.Item>
+</Menu>
+
+<Checkbox bind:checked={checked} label="I agree to sell my privacy" />
+{checked}
+{#if checked}
+YEP!
+{/if} -->