logging things

• somewhat cleaner internals with more classes and c++17
• logging to file support
  • new settings table added, old files will not have the table added for now
  • to enable logs, the following must be added to gdrpc.toml: (or reset the configuration and set logging to true)

[settings]
file_version = 2
logging = true

• giant size increase (how did it get so big?)
• maybe a tiny bit more error handling, as a treat

if you're getting crashes, please enable logging and send the log file, it will help very much when trying to fix them

DLLs:
zlib1.dll
discord-rpc.dll