Closes #19816: Implement a logging mechanism for background jobs (#19838)

* Initial work on #19816

* Use TZ-aware timestamps

* Deserialize JobLogEntry timestamp

* Repurpose RQJobStatusColumn to display job entry level badges

* Misc cleanup

* Test logging

* Refactor HTML templates

* Update documentation

netbox/core/dataclasses.py

@@ -0,0 +1,21 @@
+import logging
+
+from dataclasses import dataclass, field
+from datetime import datetime
+
+from django.utils import timezone
+
+__all__ = (
+    'JobLogEntry',
+)
+
+
+@dataclass
+class JobLogEntry:
+    level: str
+    message: str
+    timestamp: datetime = field(default_factory=timezone.now)
+
+    @classmethod
+    def from_logrecord(cls, record: logging.LogRecord):
+        return cls(record.levelname.lower(), record.msg)