feat(generics): Improve assertion and matcher type definitions by adding execution mode generics for better async/sync support

ts/namespaces/date.ts

@@ -1,10 +1,11 @@
 import { Assertion } from '../smartexpect.classes.assertion.js';
+import type { TExecutionType } from '../types.js';
 
 /**
  * Namespace for date-specific matchers
  */
-export class DateMatchers {
-  constructor(private assertion: Assertion<Date>) {}
+export class DateMatchers<M extends TExecutionType> {
+  constructor(private assertion: Assertion<Date, M>) {}
 
   toBeDate() {
     return this.assertion.customAssertion(