El component had unused fixed and sticky props

[TheHadiAhmadi]

Should we add styles for y-el-fixed and y-el-sticky or remove them from El.svelte?

to change position of El we have position prop.

[nkrisc]

On possibility for these props could be, if feasible, to make an element fixed or sticky and still work with the column layout (perhaps by using a placeholder).

The current issue in terms of ease of use right now is that if I want to make a column fixed, it is removed from the column flow and I need to manually manage it. The position prop could remain as-is and be a more "vanilla" position:fixed behavior while the fixed prop could implement some additional behavior that is specific to Yesvelte's layout mechanisms.