MIPS architecture support

[ReimuNotMoe]

Please add support for the MIPS architecture. Then cpufetch can run on lots of network equipments (routers, Wi-Fi access points, etc) that run OpenWrt.

➜  cpufetch git:(master) make      
Makefile:57: Unsupported arch detected: "mips". See https://github.com/Dr-Noob/cpufetch#1-support
Makefile:58: If your architecture is supported but the compilation fails, please open an issue in https://github.com/Dr-Noob/cpufetch/issues
Makefile:59: *** Aborting compilation. Stop.

[Dr-Noob]

As stated in the past, I'm not interested in adding support for MIPS, mainly because of the high effort neccesary to do it and presumably very low utility as very few people has MIPS CPUs. However, I would be open to review and accept a PR incorporating support for it, so if you have the time and energy to do it, feel free to submit a PR.

[Dr-Noob]

Hi, I got access to a MIPS machine recently so I'll be giving (basic) support for MIPS soon! In the meantime I would appreciate if you could share your /proc/cpuinfo. Thanks!