[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/ai/ai-agent/agent.resolver.ts

@@ -3,8 +3,8 @@ import { Args, Mutation, Query } from '@nestjs/graphql';
 
 import { PermissionFlagType } from 'twenty-shared/constants';
 import { isNonEmptyString } from '@sniptt/guards';
+import { FeatureFlagKey } from 'twenty-shared/types';
 
-import { FeatureFlagKey } from 'src/engine/core-modules/feature-flag/enums/feature-flag-key.enum';
 import { WorkspaceEntity } from 'src/engine/core-modules/workspace/workspace.entity';
 import { AuthWorkspace } from 'src/engine/decorators/auth/auth-workspace.decorator';
 import { MetadataResolver } from 'src/engine/api/graphql/graphql-config/decorators/metadata-resolver.decorator';

packages/twenty-server/src/engine/metadata-modules/ai/ai-chat/resolvers/agent-chat.resolver.ts

@@ -9,10 +9,10 @@ import {
 } from '@nestjs/graphql';
 
 import { PermissionFlagType } from 'twenty-shared/constants';
+import { FeatureFlagKey } from 'twenty-shared/types';
 
 import { UUIDScalarType } from 'src/engine/api/graphql/workspace-schema-builder/graphql-types/scalars';
 import { toDisplayCredits } from 'src/engine/core-modules/billing/utils/to-display-credits.util';
-import { FeatureFlagKey } from 'src/engine/core-modules/feature-flag/enums/feature-flag-key.enum';
 import { type WorkspaceEntity } from 'src/engine/core-modules/workspace/workspace.entity';
 import { AuthUserWorkspaceId } from 'src/engine/decorators/auth/auth-user-workspace-id.decorator';
 import { AuthWorkspace } from 'src/engine/decorators/auth/auth-workspace.decorator';