armeabi and mipsel softfloat build for old routers and development boards

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Is your feature request related to a problem? Please describe. Old routers and development boards like early Raspberry Pi boards and MT7621 routers are still widely used as of now.

Describe the solution you'd like provide prebuilt binarys for these architectures. linux build is enough, because these devices are not likely to run other operating systems.

Describe alternatives you've considered use golang version https://github.com/Mmx233/BitSrunLoginGo

Additional context none