fix: add modified discord_rpc.sh for LoL with sulaunchhelper2.sh

chore: update readme about discord_rpc.sh

games/LoL/linux/discord_rpc.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+# Launch winediscordipcbridge.exe automatically.
+
+# debug wine version and prefix"
+echo "wine: $WINE"
+echo "prefix: $WINEPREFIX"
+
+echo "Waiting for LeagueClientUx.exe to start..."
+until _=$(pidof LeagueClientUx.exe)
+do
+    sleep 1
+done
+
+echo "Launching bridge..."
+$WINE ./winediscordipcbridge.exe
+echo "Bridge closed."