feat: add nvim-scrollbar

lua/ow/plugins/nvim-scrollbar.lua

@@ -0,0 +1,17 @@
+---@type LazyPluginSpec
+return {
+    "petertriho/nvim-scrollbar",
+    config = true,
+    opts = {
+        handle = {
+            blend = 0,
+        },
+        excluded_filetypes = {
+            "NvimTree",
+        },
+        handlers = {
+            cursor = false,
+            search = true,
+        }
+    },
+}