[PM-14892] Tax estimation for individuals

[jonashendrickx]

🎟️ Tracking

https://bitwarden.atlassian.net/browse/PM-14892

📔 Objective

• Refactoring duplicate code
• Show the estimated sales tax using Stripe for individuals wanting to subscribe to the Premium plan.
• onTaxInformationChanged event will emit when country, postal code or tax id have changed, with a 1 second delay to make sure you're done typing. This allows components that integrate this component to listen for changes, and preview the invoice accordingly according to the entered data in the tax information form.
• Countries that are supported by Stripe are now validated or pulled from the back-end rather than keeping a hardcoded list of country codes in the front-end. It's a bit slower but makes the maintenance easier.

📸 Screenshots

See comment section on https://bitwarden.atlassian.net/browse/PM-13999 for recording.

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Protected functional changes with optionality (feature flags)
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation (Confluence, contributing docs) or informed the documentation team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

[codecov]

Codecov Report

Attention: Patch coverage is 4.31655% with 133 lines in your changes missing coverage. Please review.

Project coverage is 33.40%. Comparing base (e6c68b7) to head (2588716).
Report is 18 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...s/web/src/app/billing/shared/tax-info.component.ts	6.45%	58 Missing ⚠️
...pp/billing/individual/premium/premium.component.ts	0.00%	15 Missing ⚠️
...billing/individual/premium/premium-v2.component.ts	0.00%	13 Missing ⚠️
...c/billing/models/response/tax-id-types.response.ts	0.00%	13 Missing ⚠️
...ax-information/manage-tax-information.component.ts	18.18%	8 Missing and 1 partial ⚠️
libs/common/src/billing/services/tax.service.ts	0.00%	8 Missing ⚠️
...illing/models/response/preview-invoice.response.ts	0.00%	7 Missing ⚠️
...src/app/billing/shared/payment-method.component.ts	0.00%	3 Missing ⚠️
libs/angular/src/services/jslib-services.module.ts	0.00%	2 Missing ⚠️
...yment-dialog/adjust-payment-dialog-v2.component.ts	0.00%	1 Missing ⚠️
... and 4 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #11992      +/-   ##
==========================================
- Coverage   33.42%   33.40%   -0.03%     
==========================================
  Files        2871     2876       +5     
  Lines       89791    89856      +65     
  Branches    17098    17106       +8     
==========================================
+ Hits        30012    30014       +2     
- Misses      57417    57479      +62     
- Partials     2362     2363       +1     

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[github-actions]

Checkmarx One – Scan Summary & Details – 57a1ac13-6139-4e15-8492-3d6ebe42677f

No New Or Fixed Issues Found

[jonashendrickx]

This list seems to match the supported tax id types for the countries in Stripe. I've moved this bit to the back-end.