feat: add undotree

lua/ow/plugins/undotree.lua

@@ -0,0 +1,20 @@
+local function undo_tree_tab()
+    vim.cmd.tabnew()
+    vim.cmd.bprevious()
+    vim.cmd.UndotreeToggle()
+    vim.cmd.UndotreeFocus()
+end
+
+---@type LazyPluginSpec
+return {
+    "mbbill/undotree",
+    keys = {
+        { "<leader>uu", undo_tree_tab, mode = "n" },
+    },
+    init = function(_)
+        vim.g.undotree_WindowLayout = 2
+        vim.g.undotree_DiffCommand = "diff -u"
+        vim.g.undotree_SplitWidth = 50
+        vim.g.undotree_DiffpanelHeight = 20
+    end,
+}