[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/core-modules/client-config/client-config.entity.ts

@@ -1,10 +1,11 @@
 import { Field, ObjectType, registerEnumType } from '@nestjs/graphql';
 
+import { FeatureFlagKey } from 'twenty-shared/types';
+
 import { SupportDriver } from 'src/engine/core-modules/twenty-config/interfaces/support.interface';
 
 import { BillingTrialPeriodDTO } from 'src/engine/core-modules/billing/dtos/billing-trial-period.dto';
 import { CaptchaDriverType } from 'src/engine/core-modules/captcha/interfaces';
-import { FeatureFlagKey } from 'src/engine/core-modules/feature-flag/enums/feature-flag-key.enum';
 import { AuthProvidersDTO } from 'src/engine/core-modules/workspace/dtos/public-workspace-data.dto';
 import {
   InferenceProvider,