Feature flag for interview survey feature

Because:
* We want to be able to turn on and off the feature.

This commit:
* Adds a feature flag for the interview survey feature.
* Adds a view, controller, and route for the feature.
* Adds 2 tests for the feature flag.

app/controllers/interview_surveys_controller.rb

@@ -0,0 +1,12 @@
+class InterviewSurveysController < ApplicationController
+  def new
+    unless Feature.enabled?(:survey_feature, current_user)
+      redirect_to dashboard_path, notice: 'Feature not enabled'
+    end
+  end
+
+  def create
+    # puts params[:survey]
+    redirect_to dashboard_path, notice: 'Survey Submitted'
+  end
+end

app/views/interview_surveys/new.html.erb

@@ -0,0 +1,11 @@
+<%= title('Interview Survey') %>
+
+<div>
+  <div class="page-container">
+    <h1 class="page-heading-title">Interview Survey</h1>
+
+    <div class='max-w-xl mx-auto'>
+      <%# where form will be rendered %>
+    </div>
+  </div>
+</div>

config/routes.rb

@@ -105,4 +105,5 @@
 
   resources :notifications, only: %i[index update]
   resource :themes, only: :update
+  resources :interview_surveys, only: %i[new create]
 end

db/migrate/20240530151357_change_flipper_gates_value_to_text.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class ChangeFlipperGatesValueToText < ActiveRecord::Migration[7.0]
+  def up
+    # Ensure this incremental update migration is idempotent
+    return unless connection.column_exists? :flipper_gates, :value, :string
+
+    if index_exists? :flipper_gates, %i[feature_key key value]
+      remove_index :flipper_gates, %i[feature_key key value]
+    end
+    change_column :flipper_gates, :value, :text
+    add_index :flipper_gates, %i[feature_key key value], unique: true, length: { value: 255 }
+  end
+
+  def down
+    change_column :flipper_gates, :value, :string
+  end
+end

spec/system/interview_survey_spec.rb

@@ -0,0 +1,28 @@
+require 'rails_helper'
+
+RSpec.describe 'Interview survey' do
+  let(:user) { create(:user) }
+
+  before do
+    sign_in(user)
+  end
+
+  context 'when the feature is enabled' do
+    before do
+      Flipper.enable(:survey_feature)
+    end
+
+    it 'shows the survey' do
+      visit new_interview_survey_path
+      expect(page).to have_content('Interview Survey')
+    end
+  end
+
+  context 'when the feature is disabled' do
+    it 'redirects to the dashboard' do
+      visit new_interview_survey_path
+      expect(page).to have_content('Feature not enabled')
+      expect(page).to have_current_path(dashboard_path)
+    end
+  end
+end