Windows File Path Fixes (#39)

* Added system_safe_path to convert paths to Windows

* Fix issue where engines would not be reported unless a system engine was installed

* Platform independent searching for binaries in engine directory

* Add missing package to requirements.txt

* Better error handling for ffmpeg.get_all_formats()

* Add system_safe_path to more locations in api_server.py

* Fix naming issue with Blender on macos

* Fix path lookups and add engine_path to workers

* Report installed renderers in status

* Remove files included by accident

src/utilities/misc_helper.py

@@ -1,5 +1,6 @@
 import logging
 import os
+import platform
 import subprocess
 from datetime import datetime
 
@@ -103,3 +104,9 @@ def get_file_size_human(file_path):
     else:
         return f"{size_in_bytes / 1024 ** 4:.2f} TB"
 
+
+# Convert path to the appropriate format for the current platform
+def system_safe_path(path):
+    if platform.system().lower() == "windows":
+        return os.path.normpath(path)
+    return path.replace("\\", "/")