feat(tasko): new tasko plugin

plugins/tasko/README.md

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+# TaskWarrior Plugin
+
+Open annotation content with native open commands (xdg-open or open)
+
+To use it add `tasko` to the plugins array in your zshrc file:
+
+```zsh
+plugins=(... tasko)
+```
+
+**Note:** you have to [install taskwarrior](https://github.com/GothenburgBitFactory/taskwarrior) first.

plugins/tasko/tasko.plugin.zsh

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+function _tasko_print_help() {
+  echo
+  echo "Usage: tasko {TASK} {ROW}"
+  echo
+}
+
+function tasko () {
+  if [[ $# -ne 2 ]]; then
+    echo 'Error: Too many/few arguments, expecting two.' >&2
+    _tasko_print_help
+    return 1
+  fi
+
+  local annotation_desc=$(task _get $1.annotations.$2.description 2>/dev/null)
+  if [[ $? -ne 0 ]]; then
+    echo "Error: Task or row not found." >&2
+    return 1
+  fi
+
+  if [[ $annotation_desc == "" ]]; then
+    echo "Error: No text found" >&2
+    return 1
+  fi
+
+  echo "Open $annotation_desc? [y/n]"
+  read answer
+  if [[ $answer == y* ]] || [[ $answer == Y* ]]; then
+    if [[ $(uname -s) == "Linux" ]]; then
+      xdg-open $annotation_desc
+      return 0
+    else
+      open $annotation_desc
+      return 0
+    fi
+    return 1
+  fi
+  return 0
+}