added data preview module

lua/custom/plugins/data-preview.lua

@@ -0,0 +1,15 @@
+return {
+  'vinvolve/data-preview.nvim',
+  cmd = { 'DataPreview', 'DataPreviewStats' },
+  config = function()
+    local data_preview = require 'data-preview'
+    vim.api.nvim_create_user_command('DataPreview', data_preview.preview, {
+      nargs = 0,
+      desc = 'Preview data file (Parquet, Avro)',
+    })
+    vim.api.nvim_create_user_command('DataPreviewStats', data_preview.preview_stats, {
+      nargs = 0,
+      desc = 'Preview data file statistics (min, max, nulls, etc.)',
+    })
+  end,
+}