Merge NetBird cloud edition into the dashboard (#674)

Brings the unified dashboard into the open-source repo. Premium features
ship in the open code, gated at runtime via NETBIRD_CLOUD and
NETBIRD_LICENSED, with upgrade prompts for unlicensed self-hosted
deployments. Adds the cloud-only feature areas (billing, integrations,
MSP, traffic events, notifications) and the Playwright e2e suite.

config.json

@@ -14,5 +14,13 @@
   "hotjarTrackID": "$NETBIRD_HOTJAR_TRACK_ID",
   "googleAnalyticsID": "$NETBIRD_GOOGLE_ANALYTICS_ID",
   "googleTagManagerID": "$NETBIRD_GOOGLE_TAG_MANAGER_ID",
-  "wasmPath": "$NETBIRD_WASM_PATH"
+  "authServiceUrl": "$NETBIRD_AUTH_SERVICE_URL",
+  "wasmPath": "$NETBIRD_WASM_PATH",
+  "licensed": "$NETBIRD_LICENSED",
+  "cloud": "$NETBIRD_CLOUD",
+  "hubspotPortalId": "$NETBIRD_HUBSPOT_PORTAL_ID",
+  "hubspotSignupFormId": "$NETBIRD_HUBSPOT_SIGNUP_FORM_ID",
+  "hubspotOnboardingFormId": "$NETBIRD_HUBSPOT_ONBOARDING_FORM_ID",
+  "hubspotSurveyFormId": "$NETBIRD_HUBSPOT_SURVEY_FORM_ID",
+  "analyticsExcludedEmails": "$NETBIRD_ANALYTICS_EXCLUDED_EMAILS"
 }