move pricing pages to their own file

app/main/views/pricing.py

@@ -0,0 +1,45 @@
+from flask import current_app, render_template
+from flask_login import current_user
+from notifications_utils.international_billing_rates import (
+    INTERNATIONAL_BILLING_RATES,
+)
+
+from app.main import main
+from app.main.forms import SearchByNameForm
+from app.main.views.sub_navigation_dictionaries import pricing_nav
+
+
+@main.route('/pricing')
+def pricing():
+    return render_template(
+        'views/pricing/index.html',
+        sms_rate=0.0158,
+        international_sms_rates=sorted([
+            (cc, country['names'], country['billable_units'])
+            for cc, country in INTERNATIONAL_BILLING_RATES.items()
+        ], key=lambda x: x[0]),
+        search_form=SearchByNameForm(),
+        navigation_links=pricing_nav(),
+    )
+
+
+@main.route('/pricing/how-to-pay')
+def how_to_pay():
+    return render_template(
+        'views/pricing/how-to-pay.html',
+        navigation_links=pricing_nav(),
+    )
+
+
+@main.route('/pricing/billing-details')
+def billing_details():
+    if current_user.is_authenticated:
+        return render_template(
+            'views/pricing/billing-details.html',
+            billing_details=current_app.config['NOTIFY_BILLING_DETAILS'],
+            navigation_links=pricing_nav(),
+        )
+    return render_template(
+        'views/pricing/billing-details-signed-out.html',
+        navigation_links=pricing_nav(),
+    )