feat: add plugins for zsh

.zsh/zsh-fzf-tab/test/runtests.zsh

@@ -0,0 +1,27 @@
+#!/bin/zsh -f
+
+emulate zsh
+
+# Run all specified tests, keeping count of which succeeded.
+# The reason for this extra layer above the test script is to
+# protect from catastrophic failure of an individual test.
+# We could probably do that with subshells instead.
+
+integer success failure skipped retval
+for file in ${@:1}; do
+  zsh +Z -f ./ztst.zsh $file
+  retval=$?
+  if (( $retval == 2 )); then
+    (( skipped++ ))
+  elif (( $retval )); then
+    (( failure++ ))
+  else
+    (( success++ ))
+  fi
+done
+print "**************************************
+$success successful test script${${success:#1}:+s}, \
+$failure failure${${failure:#1}:+s}, \
+$skipped skipped
+**************************************"
+return $(( failure ? 1 : 0 ))