[SPIKE 5 days] Autosuggest option using substring matching

[MagdalenaLarge]

Goal
Investigate how to add substring matching option to Autosuggest component.

Background

Community backlog comment ONSdigital/design-system#894 (comment)

Context
In our Community backlog, user raised a concern about the number of characters in the list which can be searched. Currently we only use 20 characters string. As a quick fix we will allow user to adjust the parameter constraining a number of characters, but we were also asked to add new version of this component which would include substring match. We need to investigate what are possible options and decide the best solution.

Consideration
New version should meet accessibility criteria.
We don't use the latest version of Fuse - implement breaking changes.

Output
Proposal of the new Autosuggest version.
Create MVP