chore: prepare release of v9.0.0-rc.0

[susnux]

First release candidate

This release will (hopefully) be the last release of the v9 series with breaking changes.

Required PRs (breaking)

• chore!: drop tooltip directive #6787
• chore!: do not export mixins anymore #6790
• feat!: split NcSelect super component into NcSelect and NcSelectUsers #6732
• feat(NcPopover): document all properties and remove transparent floating-vue wrapper #6802

Changelog of this release

🚀 Enhancements

• feat(NcDateTimePicker): add time range picker and align naming by @susnux in feat(NcDateTimePicker): add time range picker and align naming #6728
• feat(dialogs/spawnDialog): separate spawning options from dialog props and allow Element as a container by @ShGKme in feat(dialogs/spawnDialog): separate spawning options from dialog props and allow Element as a container #6756
• feat(dialogs/spawnDialogs)!: do not toRaw the result by @ShGKme in feat(dialogs/spawnDialogs)!: do not toRaw the result  #6760
• Adjust all styles for RTL support and add directional prop to NcIconSvgWrapper by @susnux in Adjust all styles for RTL support and add directional prop to NcIconSvgWrapper #6733
• feat(dialogs/spawnDialog): return promise with the result by @ShGKme in feat(dialogs/spawnDialog): return promise with the result #6758
• feat(dialogs/spawnDialog)!: replace onClose callback with Promise by @ShGKme in feat(dialogs/spawnDialog)!: replace onClose callback with Promise #6759
• [next] feat(NcAvatar): implement custom javascript hook action for the contacts menu by @backportbot in [next] feat(NcAvatar): implement custom javascript hook action for the contacts menu #6306

🐛 Fixed bugs

• fix(NcDateTimePicker): adjust padding to prevent horizontal scrolling by @susnux in fix(NcDateTimePicker): adjust padding to prevent horizontal scrolling #6722
• fix(dialogs/spawnDialog): dialog cannot be closed by @ShGKme in fix(dialogs/spawnDialog): dialog cannot be closed #6729
• fix(NcDateTimePicker): prevent emitting [Date, null] by @susnux in fix(NcDateTimePicker): prevent emitting [Date, null] #6726
• fix(dialogs/spawnDialog)!: support vue-devtool but lose appContext by @ShGKme in fix(dialogs/spawnDialog)!: support vue-devtool but lose appContext #6752
• fix(dialogs/spawnDialog): do not teleport dialog from root by @ShGKme in fix(dialogs/spawnDialog): do not teleport dialog from root #6757
• fix(dialogs/spawnDialog): enhance spawnDialog types by @mattersj in fix(dialogs/spawnDialog): enhance spawnDialog types #6781
• fix(NcRichContenteditable): add correct tooltip by @susnux in fix(NcRichContenteditable): add correct tooltip #6778

Other Changes

• Updates for project Nextcloud vue library by @transifex-integration in Updates for project Nextcloud vue library #6721
• Updates for project Nextcloud vue library by @transifex-integration in Updates for project Nextcloud vue library #6724
• docs(NcDateTimePicker): add prop documentation for all props by @susnux in docs(NcDateTimePicker): add prop documentation for all props #6727
• Updates for project Nextcloud vue library by @transifex-integration in Updates for project Nextcloud vue library #6739
• chore: drop remaining cypress files by @susnux in chore: drop remaining cypress files #6735
• chore: adjust package engines versions by @susnux in chore: adjust package engines versions #6725
• chore: update pull_request_template.md by @ShGKme in chore: update pull_request_template.md #6736
• Updates for project Nextcloud vue library by @transifex-integration in Updates for project Nextcloud vue library #6762
• refactor: deprecate Tooltip directive for accessibility by @susnux in refactor: deprecate Tooltip directive for accessibility #6761
• refactor!(NcModal): adjust to boolean props with default false by @susnux in refactor!(NcModal): adjust to boolean props with default false #6719
• refactor: drop string-length dependency and replace with native solution by @susnux in refactor: drop string-length dependency and replace with native solution #6779
• chore: type check project on CI by @susnux in chore: type check project on CI #6737
• refactor: adjust code to fix all SASS deprecations by @susnux in refactor: adjust code to fix all SASS deprecations #6734
• refactor: Migrate NcButton from render function to template by @susnux in refactor: Migrate NcButton from render function to template #6033
• Updates for project Nextcloud vue library by @transifex-integration in Updates for project Nextcloud vue library #6783
• Updates for project Nextcloud vue library by @transifex-integration in Updates for project Nextcloud vue library #6784