add niri and update nvim config

.config/nvim/lua/plug_init/mini_init.lua

@@ -9,6 +9,7 @@ require("mini.comment").setup() -- block comments etc
 -- sugar ↓↓↓↓↓↓
 require("mini.indentscope").setup() -- show indent scope
 require("mini.cursorword").setup() -- highlight identical words
+require("mini.indentscope").gen_animation.none()
 
 -- complicated ↓↓↓↓↓↓
 require("mini.operators").setup()