Add ignorePaths to suppress allstar warnings

The UIforETW repo now contains just five binary files and these are all
from Microsoft SDKs. They are all signed by Microsoft so they are "safe"
to have as binary files.

This should resolve issue #155.

.allstar/binary_artifacts.yaml

@@ -0,0 +1,7 @@
+# Ignore reason: These signed files all come from a Microsoft SDK and are needed for UIforETW's functionality.
+ignorePaths:
+- third_party/dbghelp.dll
+- third_party/pdbcopy.exe
+- third_party/symsrv.dll
+- third_party/x64/dbghelp.dll
+- third_party/x64/symsrv.dll