Add credits.

CREDITS.md

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+bsnes was created and is maintained by byuu (Near), but many people have contributed to the project.
+
+This software would not be where it is today without the help and support of the following individuals:
+
+  - Andreas Naive
+  - Ange Albertini
+  - anomie
+  - AWJ
+  - Bisqwit
+  - blargg
+  - Łukasz Krawczyk
+  - Danish
+  - DerKoun
+  - DMV27
+  - Dr. Decapitator
+  - endrift
+  - Fatbag
+  - FitzRoy
+  - gekkio
+  - GIGO
+  - Hendricks266
+  - hex_usr
+  - ikari_01
+  - jchadwick
+  - Jonas Quinn
+  - kode54
+  - krom
+  - Lioncash
+  - Lord Nightmare
+  - lowkey
+  - Max833
+  - Matthew Callis
+  - MerryMage
+  - mightymo
+  - Nach
+  - ncbncb
+  - neviksti
+  - OV2
+  - Overload
+  - p4plus2
+  - quequotion
+  - RedDwarf
+  - Richard Bannister
+  - Ryphecha
+  - segher
+  - Sintendo
+  - SuperMikeMan
+  - Talarubi
+  - tetsuo55
+  - TmEE
+  - TRAC
+  - wareya
+  - zones
+
+If your contributions have been missed here, please reach out [here](https://byuu.org/contact) to have this corrected, thank you!