Migrate to Vue 3 and Vite

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/service/pictures/provider.ex

@@ -0,0 +1,39 @@
+defmodule Mobilizon.Service.Pictures.Provider do
+  @moduledoc """
+  Provider Behaviour for pictures stuff.
+
+  ## Supported backends
+
+    * `Mobilizon.Service.Pictures.Unsplash` [🔗](https://unsplash.com/developers)
+    * `Mobilizon.Service.Pictures.Flickr` [🔗](https://www.flickr.com/services/api/)
+
+  ## Shared options
+
+    * `:lang` Lang in which to prefer results. Used as a request parameter or
+      through an `Accept-Language` HTTP header. Defaults to `"en"`.
+    * `:country_code` An ISO 3166 country code. String or `nil`
+    * `:limit` Maximum limit for the number of results returned by the backend.
+      Defaults to `10`
+    * `:api_key` Allows to override the API key (if the backend requires one) set
+      inside the configuration.
+    * `:endpoint` Allows to override the endpoint set inside the configuration.
+  """
+
+  alias Mobilizon.Service.Pictures.Information
+
+  @doc """
+  Get a picture for a location
+
+  ## Examples
+
+      iex> search("London")
+      %Information{url: "https://some_url_to.a/picture.jpeg", author: %{name: "An author", url: "https://url.to/profile"}, source: %{name: "The source name", url: "The source URL" }}
+  """
+  @callback search(location :: String.t(), options :: keyword) ::
+              [Information.t()]
+
+  @spec endpoint(atom()) :: String.t()
+  def endpoint(provider) do
+    Application.get_env(:mobilizon, provider) |> get_in([:endpoint])
+  end
+end