Fix some warnings

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

fix error

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

Fix tests and warnings

Move process_geom/2 to addresses where it belongs
Create a special error view for invalid requests

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

credo fix

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

lib/eventos_web/views/error_view.ex

@@ -8,6 +8,10 @@ defmodule EventosWeb.ErrorView do
     "Page not found"
   end
 
+  def render("invalid_request.json", _assigns) do
+    %{errors: "Invalid request"}
+  end
+
   def render("500.html", _assigns) do
     "Internal server error"
   end