replace d2lang support with markdown and mermaid stuff, remove perl

lua/general.lua

@@ -12,6 +12,12 @@ local function map(mode, lhs, rhs, opts)
     vim.api.nvim_set_keymap(mode, lhs, rhs, options)
 end
 
+--mardown preview settings
+vim.cmd [[
+    let g:mkdp_echo_preview_url = 1
+]]
+
+
 ----------------------
 -- general setup start
 ----------------------

lua/lazy-load.lua

@@ -1,5 +1,9 @@
 require("lazy").setup({
-        { 'terrastruct/d2-vim' },
+        {
+            'iamcco/markdown-preview.nvim',
+            build = function() vim.fn["mkdp#util#install"]() end
+        },
+        { 'mracos/mermaid.vim' },
         -- Nvim-tree stuff
         { 'nvim-tree/nvim-web-devicons' }, -- optional, for file icons
         {