Move lsp config to local file structure

.config/nvim/lsp/shopify_theme_ls.lua

@@ -0,0 +1,26 @@
+---@brief
+---
+--- https://shopify.dev/docs/api/shopify-cli
+---
+--- [Language Server](https://shopify.dev/docs/themes/tools/cli/language-server) and Theme Check (linter) for Shopify themes.
+---
+--- `shopify` can be installed via npm `npm install -g @shopify/cli`.
+---
+--- Note: This LSP already includes Theme Check so you don't need to use the `theme_check` server configuration as well.
+
+---@type vim.lsp.Config
+return {
+  cmd = {
+    'shopify',
+    'theme',
+    'language-server',
+  },
+  filetypes = { 'liquid' },
+  root_markers = {
+    '.shopifyignore',
+    '.theme-check.yml',
+    '.theme-check.yaml',
+    'shopify.theme.toml',
+  },
+  settings = {},
+}