Move lsp config to local file structure

.config/nvim/lsp/rpmspec.lua

@@ -0,0 +1,19 @@
+---@brief
+---
+--- https://github.com/dcermak/rpm-spec-language-server
+---
+--- Language server protocol (LSP) support for RPM Spec files.
+---
+--- `rpm-spec-language-server` can be installed by running,
+---
+--- ```sh
+--- pip install rpm-spec-language-server
+--- ```
+
+---@type vim.lsp.Config
+return {
+  cmd = { 'rpm_lsp_server', '--stdio' },
+  filetypes = { 'spec' },
+  root_markers = { '.git' },
+  settings = {},
+}