Implemented waybar/wofi integration script

Author: mrusme

README.md

@@ -278,6 +278,8 @@ zeit export --format tyme --project "my project" --since "2020-04-01T15:04:05+07
 Here are a few integrations and extensions built by myself as well as other 
 people that make use of `zeit`:
 
+- [`zeit-waybar-wofi.sh`](https://github.com/mrusme/zeit/blob/main/extras/zeit-waybar-wofi.sh), 
+  a script for integrating `zeit` into waybar, using wofi
 - [`zeit.1m.sh`](https://github.com/mrusme/zeit/blob/main/extras/zeit.1m.sh), 
   an [`xbar`](https://github.com/matryer/xbar) plugin for `zeit`
 - [`zeit-status.sh`](https://github.com/khughitt/dotfiles/blob/master/polybar/scripts/zeit-status.sh), 

extras/zeit-waybar-wofi.sh

@@ -0,0 +1,47 @@
+#!/bin/sh
+#
+# Example waybar configuration:
+#
+# "custom/zeit": {
+#   "format": "{}",
+#   "exec": "zeit-waybar-wofi.sh",
+#   "on-click": "zeit-waybar-wofi.sh click",
+#   "interval": 10
+# },
+#
+
+ZEIT_BIN=zeit
+
+tracking=$($ZEIT_BIN tracking --no-colors)
+
+if [[ "$1" == "click" ]]
+then
+  if echo "$tracking" | grep -q '^ ▶ tracking'
+  then
+    $ZEIT_BIN finish
+    exit 0
+  fi
+
+  selection=$($ZEIT_BIN list \
+    --only-projects-and-tasks \
+    --append-project-id-to-task \
+    | wofi \
+      --dmenu \
+      --sort-order default \
+      --cache-file /dev/null\
+  )
+
+  task=$(echo $selection | pcregrep -io1 '└── (.+) \[.+')
+  project=$(echo $selection | pcregrep -io1 '.+\[(.+)\]')
+
+  if [[ "$task" == "" ]] || [[ "$project" == "" ]]
+  then
+    exit 1
+  fi
+
+  $ZEIT_BIN track -p "$project" -t "$task"
+  exit 0
+fi
+
+echo -n $tracking
+