feat nvim: 建立lspconfig整體架構

已參考mason, lspconfig, cmp官方範例，並反覆問GPT並手動對照後，已手動融合設定

dot_config/nvim/exact_lua/lsp/exact_config/mason.lua

@@ -0,0 +1,35 @@
+require("mason").setup()
+require("mason-lspconfig").setup {
+  -- A list of servers to automatically install if they're not already installed. Example: { "rust_analyzer@nightly", "lua_ls" }
+  -- This setting has no relation with the `automatic_installation` setting.
+  ---@type string[]
+  ensure_installed = {
+    -- "lua_ls", "rust_analyzer" -- 官方範例
+    "phpactor",
+    "pyright",
+    "gopls",
+    "html",
+    "cssls",
+    "tsserver",
+   },
+
+  -- Whether servers that are set up (via lspconfig) should be automatically installed if they're not already installed.
+  -- This setting has no relation with the `ensure_installed` setting.
+  -- Can either be:
+  --   - false: Servers are not automatically installed.
+  --   - true: All servers set up via lspconfig are automatically installed.
+  --   - { exclude: string[] }: All servers set up via lspconfig, except the ones provided in the list, are automatically installed.
+  --       Example: automatic_installation = { exclude = { "rust_analyzer", "solargraph" } }
+  ---@type boolean
+  automatic_installation = false,
+
+  -- See `:h mason-lspconfig.setup_handlers()`
+  ---@type table<string, fun(server_name: string)>?
+  handlers = nil,
+}
+
+-- 下面這段先註解掉，由lspconfig.lua來處理
+-- -- After setting up mason-lspconfig you may set up servers via lspconfig
+-- require("lspconfig").lua_ls.setup {}
+-- require("lspconfig").rust_analyzer.setup {}
+-- -- ...