Fix failing search for OSM and LocationIQ, fix #144

[francislavoie]

See #144 for discussion

I have not tested this, I don't have a proper dev environment to be able to build.

Overview of the changes:

• Add a data argument for searching, it should get ignored as-is for other providers, it's only handled by the search function overridden for the OSM and LocationIQ providers.
• Add the result from the previous search as the data when handling the click on the result list.
• Add the result from the previous search as the data when hitting ENTER when an item in the result list is selected. For this, I moved up the const list to before the check for the ENTER key, and I call select() on the currently selected item to get the result data.
• Add endpointReverse which fills in the params for the reverse API endpoint, i.e. the osm_id and osm_type. The function assumes that data that was passed through parse is what's given here, i.e. grabbing the params from data.raw. This would probably fail if data from a different provider gets passed in, for example.
• Add a translation function to get the correct osm_type argument for the reverse API, as the data in the result doesn't match what's expected in the query. I'm making the assumption here that the type can't be anything but the three listed there, because the OSM docs say [N|W|R] are the accepted values.
• Add an override for search which calls endpointReverse instead of endpoint if data is provided to the search.

I didn't write any additional tests, but I figure that it might make sense to do so, adding a case where a result from a previous test is passed to search.

[francislavoie]

I managed to figure out how to build it with yarn install.

I found an additional bug with my implementation in doing so, reverse only returns a JSON object (since it's a single result) rather than an array, so I needed to wrap the result in an array before passing it to parse.

I tested it with my application, and this seems to fix the issue for me.

[smeijer]

Looking good to me. Thanks!