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Results 2 issues of 20000419

When I try to run the following command" simics -no-gui --no-win fuzz.simics" on Windows Powershell , there appears some confusing errors: ![errors](https://github.com/intel/tsffs/assets/56302537/e4078118-bf26-444f-9a00-4bc4bb02eff3) I have no idea how to fix it.

This PR addresses multiple security findings in BaseTools, specifically: * **Command Injection Mitigation**: In `VfrCompiler`, replaced the risky `system()` call with safer process spawning mechanisms (`spawn`). * **Buffer Management**: Improved...