[FRONT COMPONENTS] Introduce conditionalAvailabilityExpression to command menu items (#18319)

## PR Description

- Uses `expr-eval` to enable front components (SDK plugins) to define
conditional availability as declarative expressions.
- Moves shared types and constants to `twenty-shared`
- Introduces a `conditionalAvailabilityExpression` field on
`CommandMenuItemEntity`, allowing command menu items to store an
`expr-eval` compatible expression string that is evaluated against a
CommandMenuContext to determine if the item should be shown.
- Creates an esbuild transform plugin
`conditional-availability-transform-plugin` in `twenty-sdk` that
converts TypeScript conditional availability expressions into
`expr-eval` compatible syntax at build time, so SDK developers can write
natural TS expressions that get transformed to evaluable strings.
- Removes deprecated `forceRegisteredActionsByKey` state and its usage.
- Creates `useCommandMenuContext` hook that builds the full
`CommandMenuContext` object from React state, which is then passed to
`useCommandMenuItemFrontComponentActions` for evaluating conditional
availability expressions.

packages/twenty-server/src/engine/metadata-modules/object-metadata/object-metadata.service.ts

@@ -6,6 +6,7 @@ import {
   ViewOpenRecordIn,
   ViewType,
   ViewVisibility,
+  FeatureFlagKey,
 } from 'twenty-shared/types';
 import { fromArrayToUniqueKeyRecord, isDefined } from 'twenty-shared/utils';
 import { FindManyOptions, FindOneOptions, Repository } from 'typeorm';
@@ -13,7 +14,6 @@ import { v4 as uuidv4, v4 } from 'uuid';
 
 import { ApplicationService } from 'src/engine/core-modules/application/services/application.service';
 import { type FlatApplication } from 'src/engine/core-modules/application/types/flat-application.type';
-import { FeatureFlagKey } from 'src/engine/core-modules/feature-flag/enums/feature-flag-key.enum';
 import { FeatureFlagService } from 'src/engine/core-modules/feature-flag/services/feature-flag.service';
 import { TwentyConfigService } from 'src/engine/core-modules/twenty-config/twenty-config.service';
 import { WorkspaceManyOrAllFlatEntityMapsCacheService } from 'src/engine/metadata-modules/flat-entity/services/workspace-many-or-all-flat-entity-maps-cache.service';