Switch to react-hook-form instead of custom form library

[jdorn]

Our custom useForm hook has some major issues - it doesn't work well for number inputs (#74 ), has no validation logic built-in, and causes way too many React re-renders. Instead of fix these problems, we are switching to the popular react-hook-form which has already solved all of these issues and is actively maintained.

TODO:

• Update front-end README
• Unified <Field> component

Forms to convert:

• Auth
• ChangePasswordModal
• CreateOrganization
• InitialOrgSettings
• Welcome
• DimensionForm
• EditDataSourceForm
• EditInfoForm
• EditMetricsForm
• EditTagsForm
• EditTargetingForm
• InstructionsModal
• ManualSnapshotForm
• NewExperimentForm
• NewPhaseForm
• StopExperimentForm
• InlineForm (along with IdeaPage and MetricPage)
• IdeaForm
• ImpactModal
• ImpactSummary
• TopNav
• MetricForm
• SegmentForm
• ApiKeysModal
• EditOrganizationForm
• InviteModal
• WebhooksModal
• ShareModal
• EditorPage
• GeneralSettingsPage

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app – ./packages/front-end/

🔍 Inspect: https://vercel.com/growthbook/app/Fns2MtqK77xyHEbShisBduVUcAzV
✅ Preview: https://app-git-react-hook-form-growthbook.vercel.app

docs – ./packages/docs

🔍 Inspect: https://vercel.com/growthbook/docs/J2L7A3CCgdDMnakwFtd4ZRtcqdMA
✅ Preview: https://docs-git-react-hook-form-growthbook.vercel.app

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