Add configuration for zsh

- Add ~/.zshrc
  + Configure on how the `history` works
  + Enable nicer `cd` and globbing behavior
  + Enable tab completion, and make them feel nicer
  + Enable VI mode and add some VI-like key bindings
- Add ~/.zlogout clearing the screen
- Add ~/.config/zsh/.zshrc and make it dispatch to ~/.zshrc
  to make `zsh` use the same configuration even on more
  recent Debian/Ubuntu machines that do not look for
  ~/.zshrc any more
- Ensure ~/.local/state/zsh/ exists

.config/zsh/.zshenv

@@ -0,0 +1,11 @@
+#!/bin/zsh
+
+# Failsafe: Dispatch to the real `zsh` env file in ~/
+#
+# See ~/.config/zsh/.zshrc for the details
+#
+# Without this, a set `$ZDOTDIR` would silently skip ~/.zshenv
+# and lose `skip_global_compinit=1`
+
+
+[ -f "$HOME/.zshenv" ] && . "$HOME/.zshenv"