add csp for CloudFlare analytics

lib/csp/generateCspPolicy.ts

@@ -5,6 +5,7 @@ function generateCspPolicy() {
   const policyDescriptor = mergeDescriptors(
     descriptors.app(),
     descriptors.ad(),
+    descriptors.cloudFlare(),
     descriptors.googleAnalytics(),
     descriptors.googleFonts(),
     descriptors.googleReCaptcha(),

lib/csp/policies/cloudFlare.ts

+import type CspDev from 'csp-dev';
+
+import { KEY_WORDS } from '../utils';
+
+// CloudFlare analytics
+export function cloudFlare(): CspDev.DirectiveDescriptor {
+  return {
+    'script-src': [
+      'static.cloudflareinsights.com',
+    ],
+    'style-src': [
+      KEY_WORDS.DATA,
+    ],
+  };
+}

lib/csp/policies/index.ts

 export { ad } from './ad';
 export { app } from './app';
+export { cloudFlare } from './cloudFlare';
 export { googleAnalytics } from './googleAnalytics';
 export { googleFonts } from './googleFonts';
 export { googleReCaptcha } from './googleReCaptcha';