feat(eza): New plugin for the eza tool

The `eza` plugin provides some configurable aliases to simplify usage of
the [`eza`](https://github.com/eza-community/eza) tool.

plugins/eza/eza.plugin.zsh

@@ -0,0 +1,43 @@
+
+
+typeset -a _EZA_HEAD
+typeset -a _EZA_TAIL
+
+function _configure_eza() {
+  local _val
+  # Get the head flags
+  zstyle -s ':omz:plugins:eza' 'showgroup' _val
+  if [[ -z $_val || $_val == 1 ]]; then
+    _EZA_HEAD+=("g")
+  fi
+  # Get the tail long-options
+  zstyle -s ':omz:plugins:eza' 'dirs-first' _val
+  if [[ $_val == 1 ]]; then
+    _EZA_TAIL+=("--group-directories-first")
+  fi
+  zstyle -s ':omz:plugins:eza' 'time-style' _val
+  if [[ $_val ]]; then
+    _EZA_TAIL+=("--time-style='$_val'")
+  fi
+}
+
+_configure_eza
+
+function _alias_eza() {
+  local _tail
+  _tail="${(j: :)_EZA_TAIL}"
+  alias "$1"="eza -${(j::)_EZA_HEAD}$2${_tail:+ }${_tail}${3:+ }$3"
+}
+
+_alias_eza la   la
+_alias_eza ldot ld ".*"
+_alias_eza ll   l
+_alias_eza ls
+_alias_eza lS   "l -ssize"
+_alias_eza lT   "l -snewest"
+
+unfunction _alias_eza
+unfunction _configure_eza
+unset _EZA_HEAD
+unset _EZA_TAIL
+