feat(neovim): improve smear cursor setup (#189)

Setup based on [`smear-cursor.nvim` examples][0].

[0]: https://github.com/sphamba/smear-cursor.nvim?tab=readme-ov-file#examples

Reviewed-on: #189
Co-authored-by: Joao P Dubas <joao.dubas+gitea@gmail.com>
Co-committed-by: Joao P Dubas <joao.dubas+gitea@gmail.com>

config/nvim/lua/custom/plugins/init.lua

@@ -276,6 +276,13 @@ return {
   },
   {
     'sphamba/smear-cursor.nvim',
-    opts = {},
+    opts = {
+      cursor_color = '#ff8800',
+      gamma = 1,
+      hide_target_hack = true,
+      stiffness = 0.3,
+      trailing_exponent = 10,
+      trailing_stiffness = 0.1,
+    },
   },
 }