feat: added configuration flag to enable Stripe integration

[flohoch]

Close #545

[codecov]

Codecov Report

Attention: 126 lines in your changes are missing coverage. Please review.

Comparison is base (43c2aca) 3.02% compared to head (5837f8e) 2.95%.

Files	Patch %	Lines
pages/api/v0.1/messages.ts	0.00%	34 Missing ⚠️
pages/dashboard.tsx	0.00%	13 Missing ⚠️
pages/orgs/new.tsx	0.00%	12 Missing ⚠️
pages/orgs/[orgId]/upgrade.tsx	0.00%	11 Missing ⚠️
pages/api/frontend/v0.1/stripe/products.ts	0.00%	8 Missing ⚠️
pages/subscription.tsx	0.00%	8 Missing ⚠️
pages/api/frontend/v0.1/stripe/checkoutSession.ts	0.00%	7 Missing ⚠️
pages/api/frontend/v0.1/stripe/customerPortal.ts	0.00%	7 Missing ⚠️
pages/orgs/[orgId]/settings.tsx	0.00%	6 Missing ⚠️
.../api/frontend/v0.1/stripe/subscriptions/[orgId].ts	0.00%	5 Missing ⚠️
... and 3 more

Additional details and impacted files

@@           Coverage Diff            @@
##            main    #669      +/-   ##
========================================
- Coverage   3.02%   2.95%   -0.07%     
========================================
  Files        130     130              
  Lines       2877    2943      +66     
  Branches     292     307      +15     
========================================
  Hits          87      87              
- Misses      2788    2854      +66     
  Partials       2       2              

Flag	Coverage Δ
unittests	2.95% <0.00%> (-0.07%)	⬇️

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