Move defaults/base-minimal to nixos-modules/system

nixos-modules/system/etc/gitconfig

@@ -0,0 +1,31 @@
+[core]
+        packedGitWindowSize = 16m
+        packedGitLimit = 64m
+[pack]
+        windowMemory = 64m
+        packSizeLimit = 64m
+        thread = 1
+        deltaCacheSize = 1m
+[color]
+    branch = auto
+    diff = auto
+    status = auto
+[push]
+    default = simple
+[pull]
+    rebase = true
+[branch]
+    autosetuprebase = always
+[commit]
+#   gpgsign = true
+[tag]
+#   gpgsign = true
+
+[alias]
+    s = status --short --branch
+    a = add --patch
+    c = commit --message
+    l = log --color --graph --pretty=format:'%Cred%h%Creset - %C(bold)%s%Creset%C(yellow)%d%Creset %C(green)%an%Creset %C(cyan)%cr%Creset' --abbrev-commit
+    d = diff
+[diff]
+#   noprefix = true