Move lsp config to local file structure

.config/nvim/lsp/raku_navigator.lua

@@ -0,0 +1,28 @@
+---@brief
+---
+--- https://github.com/bscan/RakuNavigator
+--- A Raku language server
+--- **By default, raku_navigator doesn't have a `cmd` set.** This is because nvim-lspconfig does not make assumptions about your path.
+--- You have to install the language server manually.
+--- Clone the RakuNavigator repo, install based on the [instructions](https://github.com/bscan/raku_Navigator#installation-for-other-editors),
+--- and point `cmd` to `server.js` inside the `server/out` directory:
+--- ```lua
+--- cmd = {'node', '<path_to_repo>/server/out/server.js', '--stdio'}
+--- ```
+--- At minimum, you will need `raku` in your path. If you want to use a non-standard `raku` you will need to set your configuration like so:
+--- ```lua
+--- settings = {
+---   raku_navigator = {
+---     rakuPath = '/some/odd/location/my-raku'
+---   }
+--- }
+--- ```
+--- The `contributes.configuration.properties` section of `raku_navigator`'s `package.json` has all available configuration settings. All
+--- settings have a reasonable default, but, at minimum, you may want to point `raku_navigator` at your `raku_tidy` and `raku_critic` configurations.
+
+---@type vim.lsp.Config
+return {
+  cmd = {},
+  filetypes = { 'raku' },
+  root_markers = { '.git' },
+}