feat(application): update/upgrade/downgrade/plans commands

[LorrisSaintGenez]

What

• application update --name — rename the current application
• application plans — list available self-serve plans (supports -o json)
• application upgrade / application downgrade — change the current app's self-serve plan
  • interactive picker or --plan, plus --dry-run and --accept-terms
  • both share one planchange flow and currently behave identically (no tier/direction enforcement)
  • blocks paid plans when the account has no payment method; requires ToS acceptance before applying
• Dashboard client: add UpdateApplication, GetSelfServePlans, GetUser, ChangeApplicationPlan (+ types), reusing the existing OAuth reauth-on-expiry flow
• Budget: Offer to control the cost by redirect to the cost-management page after upgrading to a paid plan

Test

• Manual: application update --name, application plans, application upgrade --dry-run, interactive upgrade/downgrade
• When upgrading your app to a paid plan, you should see "Want to create a budget and monitor your costs?"
  • Pressing Y or Enter should open a browser page to the cost-management page of your current application

Dependencies

https://github.com/algolia/AlgoliaWeb/pull/28576 --> needs to be live Live ✅

GROUT-304

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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🟢 Metrics 185 complexity · 104 duplication

Metric	Results
Complexity	185
Duplication	104

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_{TIP This summary will be updated as you push new changes.}

[8bittitan]

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