feat: Enhance gitconfig

.gitconfig

@@ -1,5 +1,18 @@
 [user]
     email = matthewbinning@pm.me
     name = Matthew Binning
-[core]
+    username = matthew.binning
     editor = vi
+    autocrlf = input
+[init]
+    defaultBranch = main
+[pull]
+    rebase = true
+[push]
+    autoSetupRemote = true
+[alias]
+    st = status
+    sw = switch
+    lg = log --oneline --graph --decorate
+[credential]
+    helper = store