Refactor RecordSingleSelect and RecordMultiSelect to be synchronous (#10469)

## Context
We are experiencing a lot of re-rendering / flash on MultiRecordSelect /
SingleRecordSelect / RelationPicker.

This PR is a first step to refactor this components

## Scope

Only move files to uniformize and prepare for the upcoming refactoring

## Vision
- SingleRecordPicker
- MultipleRecordPicker
- sharing RecordPicker tooling (RecordPickerComponentInstanceContext,
searchState)

Used in other areas:
- RelationPicker (which is actually only a subcomponent of
RelationToOneFieldInput)
- RelationFromManyFieldInput
- WorkflowRelationFieldInput
- etc.

+ remove all effects
+ migrate to the latest APIs
+ make a pass on re-renders to remove them completely (we likely need to
use a bit more familyStates here)

packages/twenty-front/src/modules/object-metadata/components/ObjectMetadataItemsProvider.tsx

@@ -4,8 +4,8 @@ import { useRecoilValue } from 'recoil';
 import { ObjectMetadataItemsLoadEffect } from '@/object-metadata/components/ObjectMetadataItemsLoadEffect';
 import { PreComputedChipGeneratorsProvider } from '@/object-metadata/components/PreComputedChipGeneratorsProvider';
 import { objectMetadataItemsState } from '@/object-metadata/states/objectMetadataItemsState';
-import { RecordPickerComponentInstanceContext } from '@/object-record/relation-picker/states/contexts/RecordPickerComponentInstanceContext';
-import { RelationPickerHotkeyScope } from '@/object-record/relation-picker/types/RelationPickerHotkeyScope';
+import { RelationPickerHotkeyScope } from '@/object-record/record-picker/legacy/types/RelationPickerHotkeyScope';
+import { RecordPickerComponentInstanceContext } from '@/object-record/record-picker/states/contexts/RecordPickerComponentInstanceContext';
 import { UserOrMetadataLoader } from '~/loading/components/UserOrMetadataLoader';
 
 export const ObjectMetadataItemsProvider = ({