Basic onboading flow (#24)

* removed unused file

* [WIP] Created onboarding form

* Finished basic onboarding flow; added tests

* Improved onboarding language

lib/pinchflat_web/components/layouts/partials/sidebar.html.heex

@@ -4,7 +4,9 @@
   @click.outside="sidebarToggle = false"
 >
   <div class="flex items-center justify-between gap-2 px-6 py-5.5 lg:py-6.5">
-    <h2 class="text-title-md2 font-bold text-white">Pinchflat</h2>
+    <a href="/">
+      <h2 class="text-title-md2 font-bold text-white">Pinchflat</h2>
+    </a>
 
     <button class="block lg:hidden" @click.stop="sidebarToggle = !sidebarToggle">
       <.icon name="hero-arrow-left" class="fill-current" />
@@ -15,6 +17,8 @@
       <div>
         <h3 class="mb-4 ml-4 text-sm font-medium text-bodydark2">MENU</h3>
         <ul class="mb-6 flex flex-col gap-1.5">
+          <.sidebar_item icon="hero-home" text="Home" navigate={~p"/"} />
+
           <.sidebar_item icon="hero-tv" text="Sources" navigate={~p"/sources"} />
 
           <.sidebar_item icon="hero-adjustments-vertical" text="Media Profiles" navigate={~p"/media_profiles"} />