patterns: Fix quirks of nes.hexpat with famiclones and miscellaneous fixes (#467)

* Add credit to ne.hexpat

* Add many changes to nes.hexpat

* Fixing dependance on variables declared in if statement

* Added mappers and inline to NES 2.0 header, removed needless parenthesises

* Add files via upload

* Add files via upload

* Create nsf.hexpat

* Used full name of the SNES on description

* Add SNES, NSF & NSFe, new description for NES

* Removing erroneous condition in ips.hexpat's truncatedSize

* Removing unnecessary std.string import in ips.hexpat

* Added both locations for sections in PE, clearer variable names, reorganized DOS stub

* Delete patterns/nsfe.hexpat

* Delete patterns/nsfmetadata.hexpat

* Added chunks from NSFe to NSF

* Added NSFe

* Fix size of truncatedSize in ips.hexpat

* More mappers, deprecated tag, and constants to nes

* Fixed official header's constants

* Various corrections

* Fix on declaration of sections, reserved words made into padding

* Added hacked algorithm for longer PRG ROM size, fixed iNES check

* For nes.hexpat, fixed mapper 51 still having its submapper's name

* Fix bug that makes size negative on standard roms

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Co-authored-by: Nik <werwolv98@gmail.com>

Author: gmestanley