[Feature request] Search for multiple blocks

Right now I can search for a single block type, for example `#goto portal`, or `#goto stone`. What I would like to see possible, is the ability to tell baritone to look for multiple different blocks, something like `#lookfor white_shulker_box orange_shulker_box`.
While at it, the user should have to add blocks to the search, since the minecraft chat character limit does not allow for typing all of the different shulker box types. Maybe the usage could look like this: the user enters one or multiple `#lookfor` commands, and then uses something like `#golook`to actually start the pathfinding process.