Migrate dotfiles to chezmoi

.chezmoiignore

@@ -0,0 +1,3 @@
+README.md
+.gitignore
+.DS_Store

README.md

@@ -1 +1,36 @@
 <h1 align="center">~/.dotfiles</h1>
+
+This branch uses [chezmoi](https://www.chezmoi.io/) as the dotfile manager.
+
+## Usage
+
+Preview changes:
+
+```sh
+chezmoi --source "$PWD" diff
+```
+
+Apply changes:
+
+```sh
+chezmoi --source "$PWD" apply
+```
+
+## Layout
+
+- `dot_gitconfig` -> `~/.gitconfig`
+- `private_dot_config/` -> `~/.config/`
+
+Git identity is intentionally kept out of the public repository. Put local
+identity in `~/.gitconfig.local`, for example:
+
+```ini
+[user]
+    name = Your Name
+    email = you@example.com
+```
+
+Generated and local-only files are intentionally not managed, including Neovim
+compiled packer output, `.DS_Store`, Kitty backups, and Karabiner automatic
+backups. Fish universal variables are also local-only, so `fish_variables` is
+not tracked.

dot_gitconfig

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+[filter "lfs"]
+	clean = git-lfs clean -- %f
+	smudge = git-lfs smudge -- %f
+	process = git-lfs filter-process
+	required = true
+[core]
+	editor = nvim
+    pager = delta
+[include]
+    path = ~/.gitconfig.local
+[init]
+	defaultBranch = main
+[alias]
+    st = status
+    ch = checkout
+    chb = checkout -b
+    aa = add --all
+    cm = commit
+    fe = fetch -p
+    di = diff
+[interactive]
+    diffFilter = delta --color-only
+[merge]
+    conflictstyle = diff3
+[diff]
+    colorMoved = default
+[delta]
+    navigate = true    # use n and N to move between diff sections
+    light = false      # set to true if you're in a terminal w/ a light background color (e.g. the default macOS terminal)
+    side-by-side = true