feat(create-instantsearch-app): support Autocomplete in InstantSearch.js template

[sarahdayan]

Summary

This introduces Autocomplete support in the InstantSearch.js template:

• When selecting the InstantSearch.js template with a version that supports setIndexUiState, CISA asks whether or not you want to use an autocomplete as a search box.
  • If yes:
    • CISA asks for the Query Suggestions index name to use with Autocomplete.
    • CISA asks for the Autocomplete version to use.
  • If not, the process continues as it does now.

When using an autocomplete as a search box, you get an autocomplete with recent searches and suggested searches. For the sake of code simplicity, routing isn't enabled, state is in memory.

Demo

To test locally, clone the branch and run:

node path/to/instantsearch/packages/create-instantsearch-app/src/cli/index.js

FX-2618

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Latest deployment of this branch, based on commit d084642:

Sandbox	Source
InstantSearch.js	Configuration
react-instantsearch-app	Configuration
example-react-instantsearch-default-theme	Configuration
example-react-instantsearch-next-app-dir-example	Configuration
example-vue-instantsearch-default-theme	Configuration

[dhayab]

Good for me! I've just noticed we could do some changes on an upcoming PR to the JS template:

• choose to either keep CDN scripts or package dependencies (but not both)
• replace all instantsearch.widgets.xxx calls with their shortened versions (as documented)

[sarahdayan]

Good for me! I've just noticed we could do some changes on an upcoming PR to the JS template:

• choose to either keep CDN scripts or package dependencies (but not both)
• replace all instantsearch.widgets.xxx calls with their shortened versions (as documented)

@dhayab I believe the npm dependencies are necessary to provide types in global.d.ts.

For the shortened versions, we can do this in another PR that updates all templates, wdyt?