Setup git config for minion@greylag

Previously I didn't have any additional git tools enabled, this commit
adds git-review so I can push to gerrit, and delta so I can see my
diffs more beautifully. As I'm using Latte I've also fixed delta
colors for it, and I've removed the hardcoding of the username in git
config

Change-Id: Ieec0caad5b902d44f33259af9f1053ad1fc89552
Reviewed-on: https://git.clicks.codes/c/Chimera/NixFiles/+/391
Reviewed-by: Samuel Shuert <coded@clicks.codes>
Tested-by: Skyler Grey <minion@clicks.codes>
2 files changed