Move lsp config to local file structure

.config/nvim/lsp/sorbet.lua

@@ -0,0 +1,19 @@
+---@brief
+---
+--- https://sorbet.org
+---
+--- Sorbet is a fast, powerful type checker designed for Ruby.
+---
+--- You can install Sorbet via gem install. You might also be interested in how to set
+--- Sorbet up for new projects: https://sorbet.org/docs/adopting.
+---
+--- ```sh
+--- gem install sorbet
+--- ```
+
+---@type vim.lsp.Config
+return {
+  cmd = { 'srb', 'tc', '--lsp' },
+  filetypes = { 'ruby' },
+  root_markers = { 'Gemfile', '.git' },
+}