feat: add git configuration

- Add .gitconfig with user settings and aliases

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

git/.gitconfig

@@ -0,0 +1,27 @@
+[user]
+    name = Your Name
+    email = your.email@example.com
+
+[core]
+    editor = vim
+    autocrlf = input
+    safecrlf = true
+
+[alias]
+    st = status
+    co = checkout
+    br = branch
+    ci = commit
+    unstage = reset HEAD --
+    last = log -1 HEAD
+    visual = !gitk
+    tree = log --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit
+    
+[color]
+    ui = auto
+
+[push]
+    default = simple
+
+[pull]
+    rebase = false