fix(lsp): use vim.lsp.get_clients

Closes #19

lua/nio/curl.lua

@@ -0,0 +1,14 @@
+local process = require("nio.process")
+
+local nio = {}
+
+---@class nio.curl
+nio.curl = {}
+
+---@class nio.curl.RequestOpts
+---@field method string The HTTP method to use
+---@field url string The URL to request
+---@field headers table<string, string> The headers to send
+---@field body string The body to send
+
+function nio.curl.request(opts) end

lua/nio/lsp.lua

@@ -32,7 +32,7 @@ end, 6)
 ---@return nio.lsp.Client[]
 function nio.lsp.get_clients(filters)
   local clients = {}
-  for _, client in pairs(vim.lsp.get_active_clients(filters)) do
+  for _, client in pairs((vim.lsp.get_clients or vim.lsp.get_active_clients)(filters)) do
     clients[#clients + 1] = nio.lsp.convert_client(client)
   end
   return clients