[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-shared/src/utils/conditional-availability/evaluateConditionalAvailabilityExpression.ts

@@ -0,0 +1,26 @@
+import { isNonEmptyString } from '@sniptt/guards';
+import { type EvaluationContext, Parser } from 'expr-eval';
+
+import { isDefined } from '../validation/isDefined';
+
+const parser = new Parser();
+
+parser.functions.isDefined = (value: unknown) => isDefined(value);
+parser.functions.isNonEmptyString = (value: unknown) => isNonEmptyString(value);
+
+export const evaluateConditionalAvailabilityExpression = (
+  expression: string | null | undefined,
+  context: EvaluationContext,
+): boolean => {
+  if (!isNonEmptyString(expression)) {
+    return true;
+  }
+
+  try {
+    const parsed = parser.parse(expression);
+
+    return parsed.evaluate(context) === true;
+  } catch {
+    return false;
+  }
+};