DiscordRPC UE 5.3

What's Changed

• UE5.3 by @babyico in #1
• Updated 5.3 working now ✅ by @babyico in #2

Full Changelog: v1.0.0-5.2...v1.0.1-5.3

DiscordRPC UE 5.2

Full Changelog: https://github.com/babyico/DiscordRPC/commits/v5.2.x

• Fix type error with TimeStamps
• Added GetStartTimeStamp function
• Created DiscordGameInstance class
• Combind initial setup into one node SetDiscordPresence
• various minor fixes