add nvim-dap and dap-virtual-text interface

lua/conf/plugins/dap-virtual-text.lua

@@ -0,0 +1,9 @@
+return { 'theHamsta/nvim-dap-virtual-text',
+  requires = {
+    'mfussenegger/nvim-dap',
+    'nvim-treesitter/nvim-treesitter'
+  },
+  function()
+    require("nvim-dap-virtual-text").setup {}
+  end
+}