Add typeahead to Buy Modal

The Buy Modal should include a way to search for assets to buy. Today you can only access it in your dashboard for assets you already own, or buy the market that have an asset that can be bought.

It could also be possible to access it trough the menu, like the other modals.

Start by locating the existing Buy Modal and the dashboard path for buying assets, then trace how other modals are opened from the menu. Confirm the desired behavior by checking how asset search and market selection currently work; done means users can search for assets in the Buy Modal and, if supported, reach it through the menu.

Written by the indexing model from the issue text.