Zeroconf offline-handling improvements (#77)

* Add benchmark.py

* Add cpu / disk benchmark APIs

* Add cpu_benchmark method to distributed_job_manager.py

* Do a better job of storing hostnames =

* Remove hostname from Zeroconf cache if server goes offline

* Add cpu / disk benchmark APIs

* Add cpu_benchmark method to distributed_job_manager.py

* Do a better job of storing hostnames =

* Remove hostname from Zeroconf cache if server goes offline

* Wrap main code in try finally block to always stop zeroconf

* Add missing import

requirements.txt

@@ -2,10 +2,9 @@ PyQt6>=6.6.1
 psutil>=5.9.8
 requests>=2.31.0
 Pillow>=10.2.0
-json2html>=1.3.0
 PyYAML>=6.0.1
-flask>=3.0.1
-tqdm>=4.66.1
+flask>=3.0.2
+tqdm>=4.66.2
 werkzeug>=3.0.1
 Pypubsub>=4.0.3
 zeroconf>=0.131.0
@@ -22,7 +21,6 @@ matplotlib>=3.8.2
 MarkupSafe>=2.1.4
 python-dateutil>=2.8.2
 certifi>=2023.11.17
-PySide6>=6.6.1
 shiboken6>=6.6.1
 Pygments>=2.17.2
 cycler>=0.12.1
@@ -32,4 +30,7 @@ fonttools>=4.47.2
 Jinja2>=3.1.3
 pyparsing>=3.1.1
 kiwisolver>=1.4.5
-attrs>=23.2.0
+attrs>=23.2.0
+lxml>=5.1.0
+click>=8.1.7
+requests_toolbelt>=1.0.0