[datetime] deprecate react-day-picker v7 components

[adidahiya]

Checklist

• Includes tests
• Update documentation

Changes proposed in this pull request:

• [datetime] ⚠️ deprecation(DatePicker, DateInput, DateRangePicker, DateRangeInput): components which use react-day-picker v7.x are now deprecated in favor of the newer "v3" components which use react-day-picker v8.x
• [eslint-plugin] feat(no-deprecated-components, no-deprecated-datetime-components): report deprecated react-day-picker v7.x components
  • 🔥 this is a breaking change
• [eslint-plugin] feat(no-deprecated-datetime2-components): new lint rule to flag usage of DateInput2 and DateRangeInput2

Things to note:

After this, I will release major versions of:

• @blueprintjs/eslint-plugin
• @blueprintjs/datetime2
  • N.B. v1.1.0-alpha.0 had a slight breaking change in that it required consumers to enable allowSyntheticDefaultImports in their TypeScript config, so I am opting to release v2.0.0 with this break

Screenshot

[adidahiya]

DateRangeInput is missing a deprecation message:

we also might want to update the datetime package docs index page:

[adidahiya]

feat: no-deprecated-datetime2-components lint rule

Build artifact links for this commit: documentation | landing | table | demo

This is an automated comment from the deploy-preview CircleCI job.