Create dispatcher messages (#23362)

* Async Client

* lint

* lint

* remove rate limit handeling and fix tests

* cleanup

* fix lint

* fix lint

* optimization

* extract only needed data

* fix lint

* fix lint

* Critical security and functionality fixes

* Code Quality : add type annotations and document ressource management

* new implmentation

* fix lint

* remove respx

* fix tests

* fix lint

* fix test

* Create dispatcher messages

* remove defaults

* branch off master and discard async client changes

* remove defaults and add enum

* remove async manually

* add changelog

Author: HadhemiDD

ddev/changelog.d/23362.added

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+Create dispatcher messages

ddev/src/ddev/cli/ci/tests/__init__.py

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+# (C) Datadog, Inc. 2026-present
+# All rights reserved
+# Licensed under a 3-clause BSD style license (see LICENSE)

ddev/src/ddev/cli/ci/tests/messages.py

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+# (C) Datadog, Inc. 2026-present
+# All rights reserved
+# Licensed under a 3-clause BSD style license (see LICENSE)
+from __future__ import annotations
+
+from dataclasses import dataclass
+from typing import Literal
+
+from ddev.event_bus.orchestrator import BaseMessage
+
+
+@dataclass
+class BatchJob:
+    """A single job entry in a TestBatch."""
+
+    name: str
+    target: str
+    runner: str
+    environment: str
+    platform: Literal["linux", "windows", "macos"]
+    unit_tests: bool
+    e2e_tests: bool
+
+
+@dataclass
+class FailedCheck:
+    """A single failed test check within a workflow."""
+
+    name: str
+    url: str
+
+
+@dataclass
+class WorkflowStatus:
+    """Status of a single GitHub Actions workflow run."""
+
+    url: str
+    id: int
+    success_count: int | None
+    failed_count: int | None
+    failed_checks: list[FailedCheck]
+
+
+@dataclass
+class TestBatch(BaseMessage):
+    """Dispatched to trigger a matrix of test jobs."""
+
+    job_list: list[BatchJob]
+    jobs_count: int
+    integrations: list[str]
+
+
+@dataclass
+class BatchFinished(BaseMessage):
+    """Emitted when a GitHub Actions test workflow has completed."""
+
+    status: Literal["success", "failure", "skipped"]
+    run_id: int
+    workflow_url: str
+    artifacts_path: str
+
+
+@dataclass
+class UpdatePRComment(BaseMessage):
+    """Emitted to request a PR comment update."""
+
+    done: bool
+    workflows: list[WorkflowStatus]