Add database Health class for sending DBM health events (DataDog#20739)

* Add health events to DBM integrations

* WIP

* WIP

* WIP

* WIP

* WIP

* Cleanup

* WIP

* Version

* Licenses

* Fix

* Fix

* Clean

* Namespace

* Clean

* Changelog

* Clean

* Lint

* Remove dedicated dbm health method

* Changelog

* Update datadog_checks_base/changelog.d/20739.added

Co-authored-by: NouemanKHAL <noueman.khalikine@datadoghq.com>

---------

Co-authored-by: NouemanKHAL <noueman.khalikine@datadoghq.com>

Author: sethsamuel

datadog_checks_base/changelog.d/20739.added

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+Add database Health class for sending DBM health events

datadog_checks_base/datadog_checks/base/utils/db/health.py

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+# (C) Datadog, Inc. 2025-present
+# All rights reserved
+# Licensed under a 3-clause BSD style license (see LICENSE)
+# This is the base implementation of the Agent Health reporting system.
+# It provides a structure for health events and codes that can be extended by specific checks.
+
+from __future__ import annotations
+
+import time
+from typing import TYPE_CHECKING
+
+from datadog_checks.base.utils.serialization import json
+
+if TYPE_CHECKING:
+    from datadog_checks.base import AgentCheck
+
+try:
+    import datadog_agent
+except ImportError:
+    from datadog_checks.base.stubs import datadog_agent
+
+
+from enum import Enum
+
+
+class HealthEvent(Enum):
+    """
+    Enum representing the health events.
+    """
+
+    INITIALIZATION = 'initialization'
+
+
+class HealthStatus(Enum):
+    """
+    Enum representing the health statuses for a given event.
+    """
+
+    OK = 'ok'
+    WARNING = 'warning'
+    ERROR = 'error'
+
+
+class Health:
+    def __init__(self, check: AgentCheck):
+        """
+        Initialize the HealthCheck instance.
+
+        :param check: AgentCheck
+            The check instance that will be used to submit health events.
+        """
+        self.check = check
+
+    def submit_health_event(self, name: HealthEvent, status: HealthStatus, tags: list[str] = None, **kwargs):
+        """
+        Submit a health event to the aggregator.
+
+        :param name: HealthEvent
+            The name of the health event.
+        :param status: HealthStatus
+            The health status to submit.
+        :param tags: list of str
+            Tags to associate with the health event.
+        :param kwargs: Additional keyword arguments to include in the event under `data`.
+        """
+        self.check.event_platform_event(
+            json.dumps(
+                {
+                    'timestamp': time.time() * 1000,
+                    'version': 1,
+                    'check_id': self.check.check_id,
+                    'category': self.check.__NAMESPACE__ or self.check.__class__.__name__.lower(),
+                    'name': name,
+                    'status': status,
+                    'tags': tags or [],
+                    'ddagentversion': datadog_agent.get_version(),
+                    'ddagenthostname': datadog_agent.get_hostname(),
+                    'data': {**kwargs},
+                }
+            ),
+            "dbm-health",
+        )