add optimizerAllowExpandedIDBound to SpvOptions

This option increases the max_id_bound in the optimizer to 0x3FFFFFFF, and then runs a
compact-id pass if the final result has a max_id greater than the standard limit of 0x3FFFFF.

SPIRV/GlslangToSpv.h

@@ -53,6 +53,7 @@ struct SpvOptions {
     bool emitNonSemanticShaderDebugInfo {false};
     bool emitNonSemanticShaderDebugSource{ false };
     bool compileOnly{false};
+    bool optimizerAllowExpandedIDBound{false};
 };
 
 void GetSpirvVersion(std::string&);