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/nvim/lua/plugins/overrides.lua

@@ -0,0 +1,55 @@
+-- This file contains the configuration overrides for specific Neovim plugins.
+
+return {
+  -- Change configuration for trouble.nvim
+  {
+    -- Plugin: trouble.nvim
+    -- URL: https://github.com/folke/trouble.nvim
+    -- Description: A pretty list for showing diagnostics, references, telescope results, quickfix and location lists.
+    "folke/trouble.nvim",
+    -- Options to be merged with the parent specification
+    opts = { use_diagnostic_signs = true }, -- Use diagnostic signs for trouble.nvim
+  },
+
+  -- Add symbols-outline.nvim plugin
+  {
+    -- Plugin: symbols-outline.nvim
+    -- URL: https://github.com/simrat39/symbols-outline.nvim
+    -- Description: A tree like view for symbols in Neovim using the Language Server Protocol.
+    "simrat39/symbols-outline.nvim",
+    cmd = "SymbolsOutline", -- Command to open the symbols outline
+    keys = { { "<leader>cs", "<cmd>SymbolsOutline<cr>", desc = "Symbols Outline" } }, -- Keybinding to open the symbols outline
+    config = true, -- Use default configuration
+  },
+
+  -- Remove inlay hints from default configuration
+  {
+    -- Plugin: nvim-lspconfig
+    -- URL: https://github.com/neovim/nvim-lspconfig
+    -- Description: Quickstart configurations for the Neovim LSP client.
+    "neovim/nvim-lspconfig",
+    event = "VeryLazy", -- Load this plugin on the 'VeryLazy' event
+    opts = {
+      inlay_hints = { enabled = false }, -- Disable inlay hints
+      servers = {
+        angularls = {
+          -- Configuration for Angular Language Server
+          root_dir = function(fname)
+            return require("lspconfig.util").root_pattern("angular.json", "project.json")(fname)
+          end,
+        },
+        nil_ls = {
+          -- Configuration for nil (Nix Language Server), already installed via nix
+          cmd = { "nil" },
+          autostart = true,
+          mason = false, -- Explicitly disable mason management for nil_ls
+          settings = {
+            ["nil"] = {
+              formatting = { command = { "nixpkgs-fmt" } },
+            },
+          },
+        },
+      },
+    },
+  },
+}