feat: add lsp-ai support

Author: Robzz

lua/lspconfig/configs/lsp_ai.lua

@@ -0,0 +1,26 @@
+return {
+  default_config = {
+    cmd = { 'lsp-ai' },
+    filetypes = {},
+    root_dir = nil,
+    single_file_support = true,
+    init_options = {
+      memory = {
+        file_store = vim.fn.json_decode '{}',
+      },
+    },
+  },
+  docs = {
+    [[
+https://github.com/SilasMarvin/lsp-ai
+
+LSP-AI is an open source language server that serves as a backend for AI-powered functionality in your favorite code
+editors. It offers features like in-editor chatting with LLMs and code completions.
+
+
+You will need to provide configuration for the inference backends and models you want to use, as well as configure
+completion/code actions. See the [wiki docs](https://github.com/SilasMarvin/lsp-ai/wiki/Configuration) and
+[examples](https://github.com/SilasMarvin/lsp-ai/blob/main/examples/nvim) for more information.
+]],
+  },
+}