replace nvim submodule with real files

.config/nvim/lua/plugins/diffview.lua

@@ -0,0 +1,27 @@
+return {
+	"sindrets/diffview.nvim",
+	dependencies = "nvim-tree/nvim-web-devicons",
+	opts = {
+		view = {
+			-- Disable the default normal mode mapping for `<tab>`:
+			-- ["<tab>"] = false,
+			-- Disable the default visual mode mapping for `gf`:
+			-- { "x", "gf", false },
+		},
+	},
+	hooks = {
+		diff_buf_read = function(bufnr)
+			-- Change local options in diff buffers
+			vim.opt_local.wrap = false
+			vim.opt_local.list = false
+			vim.opt_local.colorcolumn = { 80 }
+		end,
+		view_opened = function(view)
+			require("notify").notify(
+				("A new %s was opened on tab page %d!"):format(view.class:name(), view.tabpage),
+				"info",
+				{ timeout = 5000, title = "Diffview" }
+			)
+		end,
+	},
+}