Move lsp config to local file structure

.config/nvim/lsp/somesass_ls.lua

@@ -0,0 +1,30 @@
+---@brief
+---
+--- https://github.com/wkillerud/some-sass/tree/main/packages/language-server
+---
+--- `some-sass-language-server` can be installed via `npm`:
+---
+--- ```sh
+--- npm i -g some-sass-language-server
+--- ```
+---
+--- The language server provides:
+---
+--- - Full support for @use and @forward, including aliases, prefixes and hiding.
+--- - Workspace-wide code navigation and refactoring, such as Rename Symbol.
+--- - Rich documentation through SassDoc.
+--- - Language features for %placeholder-selectors, both when using them and writing them.
+--- - Suggestions and hover info for built-in Sass modules, when used with @use.
+
+---@type vim.lsp.Config
+return {
+  name = 'somesass_ls',
+  cmd = { 'some-sass-language-server', '--stdio' },
+  filetypes = { 'scss', 'sass' },
+  root_markers = { '.git', '.package.json' },
+  settings = {
+    somesass = {
+      suggestAllFromOpenDocument = true,
+    },
+  },
+}