feat(discord-bot): add separator for report messages

apps/discord-bot/src/reporting.ts

@@ -180,6 +180,7 @@ export const handleReportModal = async (interaction: ModalSubmitInteraction, cli
     const reportChannel = await client.channels.fetch(env.DISCORD_REPORT_CHANNEL);
     if (reportChannel?.type === ChannelType.GuildText) {
         const reportMessage = await reportChannel.send({
+            content:    "─────────────────────────────────",
             embeds:     [buildReportEmbed({ playerName, playerId: player.id, reason, reporterId: interaction.user.id })],
             components: [reportActionRow(inserted.id)],
         });