Optimize Neovim configuration structure and LSP setup

- Remove duplicate nvim-web-devicons loading (already in kickstart)
- Add clangd configuration to custom LSP setup with proper flags
- Replace complex clangd_helper with universal LSP reload keybind (<leader>lr)
- Clean up unused clangd target selection keybind
- Streamline plugin organization for better maintainability

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

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

lua/custom/keymaps.lua

@@ -1,10 +1,26 @@
 -- [[ Basic Keymaps ]]
 -- See `:help vim.keymap.set()`
 
--- Add any other general-purpose keymaps you want here
-vim.keymap.set('n', '<leader>T', function()
-  require('custom.lsp.clangd'):pick_target()
-end, { desc = 'Choose [T]arget' })
+-- LSP reload function
+local function reload_lsp()
+  local clients = vim.lsp.get_clients()
+  if #clients == 0 then
+    print('No LSP clients running')
+    return
+  end
+  
+  for _, client in ipairs(clients) do
+    vim.lsp.stop_client(client.id)
+  end
+  
+  vim.defer_fn(function()
+    vim.cmd('LspStart')
+    print('LSP servers reloaded')
+  end, 500)
+end
+
+-- Reload LSP keybind
+vim.keymap.set('n', '<leader>lr', reload_lsp, { desc = '[L]SP [R]eload all servers' })
 
 -- Standard practice for Lua modules that don't need to return complex data
 return {}