Add workflow for checking query files

scripts/check-queries.lua

@@ -0,0 +1,25 @@
+-- Execute as `nvim --headless -c "luafile ./scripts/check-queries.lua"`
+local function do_check()
+  local parsers = require 'nvim-treesitter.parsers'.available_parsers()
+  local queries = require 'nvim-treesitter.query'
+  local query_types = {'highlights', 'locals'}
+
+  for _, lang in pairs(parsers) do
+    for _, query_type in pairs(query_types) do
+      print('Checking '..lang..' '..query_type)
+      queries.get_query(lang, query_type)
+    end
+  end
+end
+
+
+local ok, err = pcall(do_check)
+if ok then
+  print('Check successful!\n')
+  vim.cmd('q')
+else
+  print('Check failed:')
+  print(err)
+  print('\n')
+  vim.cmd('cq')
+end