Use LiveToast instead of built-in flash helpers

So that they can stack and get dismissed automatically

lib/music_library_web/components/barcode_scanner_component.ex

@@ -323,7 +323,7 @@ defmodule MusicLibraryWeb.BarcodeScannerComponent do
             "Failed to search release for barcode #{number}: #{inspect(reason)}"
           end)
 
-          put_flash(
+          put_toast(
             socket,
             :error,
             gettext("Failed to search release for barcode %{number}", number: number)
@@ -339,7 +339,7 @@ defmodule MusicLibraryWeb.BarcodeScannerComponent do
     socket =
       case BarcodeScan.import_results(socket.assigns.scan_results, current_time) do
         [] ->
-          put_flash(socket, :info, gettext("Records imported successfully"))
+          put_toast(socket, :info, gettext("Records imported successfully"))
 
         errors ->
           errors_summary =
@@ -347,7 +347,7 @@ defmodule MusicLibraryWeb.BarcodeScannerComponent do
               "#{number}: #{inspect(reason)}"
             end)
 
-          put_flash(
+          put_toast(
             socket,
             :error,
             gettext("Some records could not be imported: %{summary}", summary: errors_summary)

lib/music_library_web/components/form_component.ex

@@ -198,7 +198,7 @@ defmodule MusicLibraryWeb.FormComponent do
 
         {:noreply,
          socket
-         |> put_flash(:info, gettext("Record updated successfully"))
+         |> put_toast(:info, gettext("Record updated successfully"))
          |> push_patch(to: socket.assigns.patch)}
 
       {:error, %Ecto.Changeset{} = changeset} ->

lib/music_library_web/components/release_component.ex

@@ -147,12 +147,12 @@ defmodule MusicLibraryWeb.ReleaseComponent do
           {:noreply,
            socket
            |> assign(:already_scrobbled, true)
-           |> put_flash(:info, gettext("Release scrobbled successfully"))}
+           |> put_toast(:info, gettext("Release scrobbled successfully"))}
 
         {:error, reason} ->
           {:noreply,
            socket
-           |> put_flash(
+           |> put_toast(
              :error,
              gettext("Error scrobbling release") <> "," <> inspect(reason)
            )}
@@ -177,12 +177,12 @@ defmodule MusicLibraryWeb.ReleaseComponent do
           {:noreply,
            socket
            |> assign(:already_scrobbled, true)
-           |> put_flash(:info, gettext("Disc scrobbled successfully"))}
+           |> put_toast(:info, gettext("Disc scrobbled successfully"))}
 
         {:error, reason} ->
           {:noreply,
            socket
-           |> put_flash(
+           |> put_toast(
              :error,
              gettext("Error scrobbling disc") <> "," <> inspect(reason)
            )}