Cldc 1522 buyer 2 relationship (#921)

* feat: add buyer 2-1 relationship question and page (migration and schema to come in next commit)

* feat: add buyer 2-1 migration and schema

* feat: update schema

* feat: add depends_on and tests

* feat: add hint text

* tests: add new tests

* refactor: lint appeasing

* test: update no. of pages

spec/models/form_handler_spec.rb

@@ -61,14 +61,14 @@ RSpec.describe FormHandler do
     it "is able to load a current sales form" do
       form = form_handler.get_form("current_sales")
       expect(form).to be_a(Form)
-      expect(form.pages.count).to eq(18)
+      expect(form.pages.count).to eq(19)
       expect(form.name).to eq("2022_2023_sales")
     end
 
     it "is able to load a previous sales form" do
       form = form_handler.get_form("previous_sales")
       expect(form).to be_a(Form)
-      expect(form.pages.count).to eq(18)
+      expect(form.pages.count).to eq(19)
       expect(form.name).to eq("2021_2022_sales")
     end
   end