use GNU stow for setup

zsh/.zsh/configs/post/path.zsh

@@ -0,0 +1,13 @@
+# ensure dotfiles bin directory is loaded first
+PATH="$HOME/local/bin:$PATH"
+
+# load rbenv if available
+if command -v rbenv >/dev/null; then
+  eval "$(rbenv init - --no-rehash)"
+fi
+
+# nvm
+NVM_DIR="$HOME/.nvm"
+[ -s "$NVM_DIR/nvm.sh" ] && source "$NVM_DIR/nvm.sh"
+
+export -U PATH