overhauled plugins

lua/haelnorr/lazy/markdown-preview.lua

@@ -0,0 +1,9 @@
+return {
+  "iamcco/markdown-preview.nvim",
+  cmd = { "MarkdownPreviewToggle", "MarkdownPreview", "MarkdownPreviewStop" },
+  build = "cd app && yarn install",
+  init = function()
+    vim.g.mkdp_filetypes = { "markdown" }
+  end,
+  ft = { "markdown" },
+}