Add nvim config

nvim/lua/plugins/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" },
+}