feat(tazjin/emacs): install treecrumbs package

Change-Id: Ia903a38df7258c1528f3d4ac3ca4ae7f82edb3e9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/11106
Reviewed-by: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>

users/tazjin/emacs/config/init.el

@@ -181,6 +181,9 @@
 (use-package terraform-mode)
 (use-package toml-ts-mode)
 
+(use-package treecrumbs
+  :hook ((yaml-ts-mode . treecrumbs-mode)))
+
 (use-package tvl)
 
 (use-package vertico

users/tazjin/emacs/default.nix

@@ -116,6 +116,7 @@ pkgs.makeOverridable
       tvlPackages.passively
       tvlPackages.rcirc
       tvlPackages.term-switcher
+      tvlPackages.treecrumbs
       tvlPackages.tvl
 
       # Dynamic/native modules