Move lsp config to local file structure

.config/nvim/lsp/robotcode.lua

@@ -0,0 +1,15 @@
+---@brief
+---
+--- https://robotcode.io
+---
+--- RobotCode - Language Server Protocol implementation for Robot Framework.
+
+---@type vim.lsp.Config
+return {
+  cmd = { 'robotcode', 'language-server' },
+  filetypes = { 'robot', 'resource' },
+  root_markers = { 'robot.toml', 'pyproject.toml', 'Pipfile', '.git' },
+  get_language_id = function(_, _)
+    return 'robotframework'
+  end,
+}