Initial implementation of blender benchmark addon

Just some glue logic to query progress and results from benchmark.

Needed to move files around, so oth standalone and addon are happy.

benchmark/foundation/system_info.py

@@ -6,8 +6,8 @@ import subprocess
 import sys
 
 # Usually comes from third_party
-import cpuinfo
-import cpu_cores
+from .third_party import cpuinfo
+from .third_party import cpu_cores
 
 
 def _getBlenderDeviceInfo(ctx):
@@ -38,7 +38,7 @@ def getBlenderVersion(ctx):
             "build_commit_date",
             "build_commit_time",
             "build_hash")
-    command = [ctx.blender, "--version"]
+    command = [ctx.blender, "--background", "--version"]
     process = subprocess.Popen(command,
                                stdout=subprocess.PIPE,
                                stderr=subprocess.STDOUT)