style(otter.lua): fix indentation and spacing for better code readability

feat(otter.lua): add file type (ft) configuration for Python and Lua files

lua/absolute/plugins/otter.lua

@@ -3,4 +3,5 @@ return {
     config = function()
         require("absolute.after.otter")
     end,
+    ft = { "py", "lua" }
 }