* Add PUP loader
* Add .tar loader and update .pup loader
* Add extract method + offset to TAR loader
Also adds error checking + operator bool overload
* Add firmware decryption keys to key vault
* Initial seperation of SELFDecrypter
This seperates SELFDecrypter into itself and SCEDecrypter.
SCEDecrypter contains the logic to decrypt any file with an SCE Header.
SELFDecrypter inherits from SCEDecrypter and contains the code
specifically to do with ELF. DecryptData could be deduplicated more.
* Add "Install Firmware" option to tools menu
* SCEDecrypter: put each segment in own file
Also, const-correctness, adjusted buffer size and better error handling
* More SELFDecrypter refactoring
* Compile fix
* Add messageboxes to firmware install
* Add progress bar to firmware install
