Support cloudtop

Supports ZSH themes based on which device I'm working. This might get
annoying after awhile, but I think the idea of having the prompt reflect
when I'm on a different machine than my own might be useful.

Adds "cloudtop" alias in ssh config.

configs/shared/misc/.ssh/config

@@ -1,5 +1,8 @@
 Host box
   Hostname wpcarro.lon.corp.google.com
 
+Host cloudtop
+  Hostname wpcarro.c.googlers.com
+
 Match host *.corp.google.com
   ProxyCommand corp-ssh-helper %h %p

configs/shared/zsh/.zshrc

@@ -14,7 +14,12 @@ antigen bundle zsh-completions # extracts archives polymorphically
 antigen bundle zsh-users/zsh-syntax-highlighting
 
 # Theming
-antigen theme refined
+# This supports different ZSH themes for each machine
+case "$(hostname)" in
+  wpcarro.c.googlers.com)      antigen theme cloud;;
+  wpcarro.lon.corp.google.com) antigen theme frisk;;
+  *)                           antigen theme refined;;
+esac
 
 # Leave this last
 antigen apply