[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/flat-command-menu-item/utils/from-command-menu-item-entity-to-flat-command-menu-item.util.ts

@@ -73,6 +73,8 @@ export const fromCommandMenuItemEntityToFlatCommandMenuItem = ({
     createdAt: commandMenuItemEntity.createdAt.toISOString(),
     updatedAt: commandMenuItemEntity.updatedAt.toISOString(),
     applicationUniversalIdentifier,
+    conditionalAvailabilityExpression:
+      commandMenuItemEntity.conditionalAvailabilityExpression,
     availabilityObjectMetadataUniversalIdentifier,
     frontComponentUniversalIdentifier,
   };

packages/twenty-server/src/engine/metadata-modules/flat-command-menu-item/utils/from-create-command-menu-item-input-to-flat-command-menu-item-to-create.util.ts

@@ -70,6 +70,8 @@ export const fromCreateCommandMenuItemInputToFlatCommandMenuItemToCreate = ({
       CommandMenuItemAvailabilityType.GLOBAL,
     availabilityObjectMetadataId:
       createCommandMenuItemInput.availabilityObjectMetadataId ?? null,
+    conditionalAvailabilityExpression:
+      createCommandMenuItemInput.conditionalAvailabilityExpression ?? null,
     availabilityObjectMetadataUniversalIdentifier,
     workspaceId,
     applicationId: flatApplication.id,