move fish abbreviations to config.fish

relying on fish_variables meant too many conflicts

.config/fish/config.fish

@@ -13,3 +13,19 @@ if status is-interactive
     tmux attach-session -d -t default
   end
 end
+
+abbr -Ua g    git
+abbr -Ua gp   git push --force-with-lease
+abbr -Ua gf   git fetch
+abbr -Ua gpl  git pull
+abbr -Ua gplr git pull --rebase 
+abbr -Ua gst  git status
+abbr -Ua gcb  git checkout -b
+abbr -Ua gco  git checkout
+abbr -Ua ga   git add
+abbr -Ua gc   git commit
+abbr -Ua grr  git rebase --continue
+abbr -Ua gr   git rebase
+
+
+abbr -Ua fug  nvim +Git +only