Feat: Initial Setup through env vars (#1736)

* initial support for initial setup

* improve setup

* improve mobile view

* move base admin route

* admin panel mobile view

* set initial host and port

* add docs

* properly setup everything, use for dev env

* change userconfig and interface port on setup, note users afterwards

src/app/layouts/setup.vue

@@ -11,8 +11,8 @@
     </header>
     <main>
       <Panel>
-        <PanelBody class="mx-auto mt-10 p-4 md:w-[70%] lg:w-[60%]">
-          <h2 class="mb-16 mt-8 text-3xl font-medium">
+        <PanelBody class="m-4 mx-auto mt-10 md:w-[70%] lg:w-[60%]">
+          <h2 class="mb-16 mt-8 text-center text-3xl font-medium">
             {{ $t('setup.welcome') }}
           </h2>