Move lsp config to local file structure

.config/nvim/lsp/contextive.lua

@@ -0,0 +1,17 @@
+---@brief
+---
+--- https://github.com/dev-cycles/contextive
+---
+--- Language Server for Contextive.
+---
+--- Contextive allows you to define terms in a central file and provides auto-completion suggestions and hover panels for these terms wherever they're used.
+---
+--- To install the language server, you need to download the appropriate [GitHub release asset](https://github.com/dev-cycles/contextive/releases/) for your operating system and architecture.
+---
+--- After the download unzip the Contextive.LanguageServer binary and copy the file into a folder that is included in your system's PATH.
+
+---@type vim.lsp.Config
+return {
+  cmd = { 'Contextive.LanguageServer' },
+  root_markers = { '.contextive', '.git' },
+}