fix: migrate to native vim.lsp.config for nvim 0.11+

Replaces the deprecated `require('lspconfig')[name].setup()` pattern
with Neovim's native `vim.lsp.config` and `vim.lsp.enable` APIs within
the Mason handler.

`nvim-lspconfig` is deprecating its internal framework logic in favor of
Neovim's core LSP management. This change resolves the deprecation
warning and ensures compatibility with nvim-lspconfig v3.0.0.

Author: James-Leste

init.lua

@@ -729,7 +729,8 @@ require('lazy').setup({
             -- by the server configuration above. Useful when disabling
             -- certain features of an LSP (for example, turning off formatting for ts_ls)
             server.capabilities = vim.tbl_deep_extend('force', {}, capabilities, server.capabilities or {})
-            require('lspconfig')[server_name].setup(server)
+            vim.lsp.config(server_name, server)
+            vim.lsp.enable(server_name)
           end,
         },
       }