feat(gs/emacs): Switch to org-tracker

Work is now using JIRA instead of Clubhouse, so I've started writing
org-tracker[0] as a pluggable-backend version of org-clubhouse (I'll
probably add github issue support as well!). This switches my personal
config to use that instead of org-clubhouse, including the
checkout-branch-with-ticket-id stuff I had locally.

[0]: https://github.com/glittershark/org-tracker

Change-Id: I3cf72d6640b155c92ca9ddd1d9d9b5167367951a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3180
Reviewed-by: grfn <grfn@gws.fyi>
Tested-by: BuildkiteCI

users/grfn/emacs.d/packages.el

@@ -17,9 +17,9 @@
 (package! string-inflection)
 
 ;;; Org
-(package! org-clubhouse
+(package! org-tracker
   :recipe (:host file
-           :local-repo "~/code/org-clubhouse"))
+           :local-repo "~/code/org-tracker"))
 (package! org-alert)
 (package! ob-http)
 (package! ob-ipython)