docs(v3.5.0): update README for integrated mg_dotfiles and security improvements

- Integrated mg_dotfiles as regular directory (not submodule)
- Added .zshrc.local.example template for local configs without secrets
- Added mg_dotfiles/zsh/.zshrc.local to .gitignore to protect API keys
- Updated README to reflect mg_dotfiles integration and new structure
- Added nvim configuration directory with LazyVim setup

mg_dotfiles/omarchy/walker/config.toml

@@ -0,0 +1,49 @@
+force_keyboard_focus = true                                                 # forces keyboard forcus to stay in Walker
+selection_wrap = true                                                       # wrap list if at bottom or top
+theme = "omarchy-default"                                                   # theme to use
+additional_theme_location = "~/.local/share/omarchy/default/walker/themes/"
+hide_action_hints = true                                                    # globally hide the action hints
+
+[placeholders]
+"default" = { input = " Search...", list = "No Results" } # placeholders for input and empty list, key is the providers name, so f.e. "desktopapplications" or "menus:other"
+
+[keybinds]
+quick_activate = []
+
+[columns]
+symbols = 1 # providers to be queried by default
+
+[providers]
+max_results = 256 # 256 should be enough for everyone
+default = [
+  "desktopapplications",
+  "websearch",
+]
+
+[[providers.prefixes]]
+prefix = "/"
+provider = "providerlist"
+
+[[providers.prefixes]]
+prefix = "."
+provider = "files"
+
+[[providers.prefixes]]
+prefix = ":"
+provider = "symbols"
+
+[[providers.prefixes]]
+prefix = "="
+provider = "calc"
+
+[[providers.prefixes]]
+prefix = "@"
+provider = "websearch"
+
+[[providers.prefixes]]
+prefix = "$"
+provider = "clipboard"
+
+[[emergencies]]
+text = "Restart Walker"
+command = "omarchy-restart-walker"