[dev] nixos; riot multiple targets; install without ssh keys (#42)

* auth: add .eid/authorized_certificates for pam pkcs11 auth

* .zshrc: alias sl for sudo zsh -l

* to-install: nix

* zshrc: use gnu ls on mac

* zshrc: try to use gnu-ls

* try to fix ci for macos

* riot: add domain box[0-9]

* riot: shortcuts i,x,j

* .zshrc: warn if not in main channel

* sagt: reset agent so paths

* sagt: import ssh-agent -P paths

* common.sh: is_port_free and get_free_port

* riot use get_free_port to fix issue on windows

* riot: ssh support instant command

* riot: proxy delimiter from comma (,) to slash (/)

* riot: support multiple remotes, delimiter=comma (,)

* riot: fix ci; install.sh: --no-ssh

* riot: improve ci

---------

Co-authored-by: xiongdian.me <xiongdian.me@bytedance.com>

.eid/authorized_certificates

@@ -0,0 +1,30 @@
+-----BEGIN CERTIFICATE-----
+MIIFIDCCAwigAwIBAgIUK1zXH5UosBim7i+kIZyPGpowU9cwDQYJKoZIhvcNAQEL
+BQAwgZUxCzAJBgNVBAYTAkNOMRAwDgYDVQQIDAdCRUlKSU5HMRAwDgYDVQQHDAdC
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+ieaYgBZCDxuZdloYSmj9Z/Rqn2dy4dcUAxKrEwW/6VPqQNrJETTtadS1SF0EsDxV
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+dVZ6R452SZsrE4V+3LR011BxzEg=
+-----END CERTIFICATE-----