Updating test suite to cover all the new graphql features and adding in some extra testing of the older rest features in case we still need them

Added some changes to the graphql base query to include generation of filter and sort params.

Updated the filter factory to support the rest mode (prepended $ sign) and the graphql mode.

Author: msquance-stem

app/services/cms/resource.rb

@@ -126,7 +126,11 @@ def self.clear_cache(key = nil)
         when "rest"
           Providers::Strapi::Client.new
         when "graphql"
-          Providers::Strapi::GraphqlClient.new
+          if Rails.env.test?
+            Providers::Strapi::GraphqlClient.new(schema_path: StrapiStubs::GRAPH_SCHEMA)
+          else
+            Providers::Strapi::GraphqlClient.new
+          end
         else
           Providers::Strapi::Client.new
         end