shell/zsh: add basic integration with fzf

Closes #29

shell/zsh

@@ -0,0 +1,32 @@
+function __tas_task_idx() {
+  echo "$@" | sed 's/^\([0-9]\+\)\..\+$/\1/'
+}
+
+function __tas_show() {
+  tas show $(__tas_task_idx "$@")
+}
+
+function __tas_start() {
+  tas start $(__tas_task_idx "$@")
+}
+
+function __tas_list() {
+  tas list | fzf --info=inline --height=50% --no-sort --keep-right --layout=reverse
+}
+
+function taz() {
+  case $1 in
+    "" | "show" | "sh")
+      __tas_show $(__tas_list)
+      ;;
+
+    "list" | "ls")
+      __tas_list
+      ;;
+
+    "start" | "st")
+      __tas_start $(__tas_list)
+    
+  esac
+}
+