request: add computed values in the db

[IAlphaOmegaI]

Pretty much the title, if we could have computed values in the database level, it would make filtering much easier,

Example:

posts: defineTable({
     ratings: v.array(v.number())
}, {

computed: { avarageRating: ({ratings) => ratings.reduce(...) / rating.length ?? 1))}
})


// filtering based on avarageRating would be much easier

await ctx.db
      .query("posts").filter(q => q.gte(q.field("avarageRating"), 3))

...