Move lsp config to local file structure

.config/nvim/lsp/robotframework_ls.lua

@@ -0,0 +1,12 @@
+---@brief
+---
+--- https://github.com/robocorp/robotframework-lsp
+---
+--- Language Server Protocol implementation for Robot Framework.
+
+---@type vim.lsp.Config
+return {
+  cmd = { 'robotframework_ls' },
+  filetypes = { 'robot' },
+  root_markers = { 'robotidy.toml', 'pyproject.toml', 'conda.yaml', 'robot.yaml', '.git' },
+}