feat: added basic login UI (non-functional)

views/login.pug

@@ -2,5 +2,10 @@ extends _base_
 block section
 	span login
 block content
-	.flex.flex-col.flex-center.h-full
-		h1.text-3xl Login
+	.flex.flex-col.flex-center.h-full: .setup-panel
+		h3 Username
+		sl-input#login-username(type='text' placeholder='username' clearable): sl-icon(slot='prefix' name='fas-user' library='fa')
+		h3 Password
+		sl-input#login-password(type='password' placeholder='password' clearable): sl-icon(slot='prefix' name='fas-lock' library='fa')
+		sl-button.mt-4#login-submit(type='primary' submit) Login
+	//- script(src='/setup/login.js')