fix(hook): clean up old repo rename code by adding action field to hook

[ecrupper]

Context: there have been some errors related to repository events not being processed correctly by the webhook endpoint. This led me to look over the renaming a repository code. The fix for the errors can be handled in the server code, but what caught my eye was the fact that I chose to override the hook.Event field to be a custom renameRepository hard-coded string. With the new scoped ruleset support, I think it would be consistent to mirror build.Event and build.EventAction with hook.Event and hook.EventAction.

Also random, but VSCode tried to include a project folder in the commit, so I added that to the .gitignore.

[codecov]

Codecov Report

Merging #252 (e430625) into master (c60972a) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #252   +/-   ##
=======================================
  Coverage   97.08%   97.08%           
=======================================
  Files          57       57           
  Lines        6268     6288   +20     
=======================================
+ Hits         6085     6105   +20     
  Misses        134      134           
  Partials       49       49           

Impacted Files	Coverage Δ
database/hook.go	100.00% <100.00%> (ø)
library/hook.go	100.00% <100.00%> (ø)

[jbrockopp]

LGTM