feat(wpcarro/gitconfig): Set push.default to current

Also:
- move to `dotfiles` subdir
- rename .gitignore -> gitignore

Change-Id: I098aef39ba3415de54812d4d36f8672b0e094c86
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7012
Tested-by: BuildkiteCI
Reviewed-by: kanepyork <rikingcoding@gmail.com>

users/wpcarro/dotfiles/gitconfig

@@ -3,3 +3,5 @@
 	email = "wpcarro@gmail.com"
 [diff]
   external = difft
+[push]
+	default = current