Customise Flickr colour code and styles

[adinan-cenci]

Hello, absolutely love this app.

Flickr has query parameters we can use to further narrow down the search, like colour_codes and styles.

Currently variety does not allow us to specify those parameters, unfortunately.

Take this search result as an example:
flickr.com/search/?text=neon city&color_codes=9

Currently it is not possible to have this search result in variety.

Proposed solution

Add two new inputs in the Flickr form setting.

Proposed workflow

1. Open the settings -> General
2. Add -> Flickr
3. In the form there will be two new inputs, one to specify "color codes" and another to specify "styles".