feat: number sales setup section

app/models/form/sales/questions/buyer_company.rb

@@ -6,6 +6,7 @@ class Form::Sales::Questions::BuyerCompany < ::Form::Question
     @header = "Is the buyer a company?"
     @type = "radio"
     @answer_options = ANSWER_OPTIONS
+    @question_number = 7
   end
 
   ANSWER_OPTIONS = {

app/models/form/sales/questions/buyer_live.rb

@@ -6,6 +6,7 @@ class Form::Sales::Questions::BuyerLive < ::Form::Question
     @header = "Will the buyers live in the property?"
     @type = "radio"
     @answer_options = ANSWER_OPTIONS
+    @question_number = 8
   end
 
   ANSWER_OPTIONS = {

app/models/form/sales/questions/discounted_ownership_type.rb

@@ -6,6 +6,7 @@ class Form::Sales::Questions::DiscountedOwnershipType < ::Form::Question
     @header = "What is the type of discounted ownership sale?"
     @type = "radio"
     @answer_options = ANSWER_OPTIONS
+    @question_number = 5
   end
 
   ANSWER_OPTIONS = {

app/models/form/sales/questions/joint_purchase.rb

@@ -6,6 +6,7 @@ class Form::Sales::Questions::JointPurchase < ::Form::Question
     @header = "Is this a joint purchase?"
     @type = "radio"
     @answer_options = ANSWER_OPTIONS
+    @question_number = 9
   end
 
   ANSWER_OPTIONS = {

app/models/form/sales/questions/number_joint_buyers.rb

@@ -7,6 +7,7 @@ class Form::Sales::Questions::NumberJointBuyers < ::Form::Question
     @hint_text = "You should still try to answer all questions even if the buyer wasn't interviewed in person"
     @type = "radio"
     @answer_options = ANSWER_OPTIONS
+    @question_number = 10
   end
 
   ANSWER_OPTIONS = {

app/models/form/sales/questions/outright_ownership_type.rb

@@ -9,6 +9,7 @@ class Form::Sales::Questions::OutrightOwnershipType < ::Form::Question
     @conditional_for = {
       "othtype" => [12],
     }
+    @question_number = 6
   end
 
   ANSWER_OPTIONS = {

app/models/form/sales/questions/shared_ownership_type.rb

@@ -7,6 +7,7 @@ class Form::Sales::Questions::SharedOwnershipType < ::Form::Question
     @hint_text = "A shared ownership sale is when the purchaser buys up to 75% of the property value and pays rent to the Private Registered Provider (PRP) on the remaining portion"
     @type = "radio"
     @answer_options = answer_options
+    @question_number = 4
   end
 
   def answer_options