Added async module and hooks management

zsh.d/60-hooks.zsh

@@ -0,0 +1,27 @@
+# Hooks for zsh
+#
+# - precmd
+# - chpwd
+# - preexec
+# - periodic
+# - zshaddhistory
+# - zshexit
+#
+
+# Gitfetch precmd hook
+
+# Empty, but required, callback function
+# We can implement logging here
+function completed_callback() {}
+
+# Create worker for async precmd
+async_start_worker _precmd
+async_register_callback _precmd completed_callback
+
+# Async invocation of gitfect on precmd worker
+function gitfetch_hook() {
+  async_job _precmd gitfetch $PWD
+}
+
+# Add async function to precmd hook
+add-zsh-hook precmd gitfetch_hook