engine: restore `mat_crosshair_printmaterial` concommand (#763)

Restores the `mat_crosshair_printmaterial` concommand by reimplementing it's callback. Adds `CMaterialGlue` and `CShaderGlue` classes.

1 files changed, 7 insertions, 0 deletions

diff --git a/primedev/materialsystem/cshaderglue.h b/primedev/materialsystem/cshaderglue.h
new file mode 100644
index 00000000..8194f1fb
--- /dev/null
+++ b/primedev/materialsystem/cshaderglue.h
@@ -0,0 +1,7 @@
+#pragma once
+
+class CShaderGlue
+{
+public:
+	void* vftable;
+};