Added "gdb-remote-port" and "gdb-remote-hostname" attach properties
usage in
README.md and updated package.json version to 0.2.3
This was missed in PR https://github.com/llvm/llvm-project/pull/91570
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Co-authored-by: Santhosh Kumar Ellendula <sellendu@hu-sellendu-hyd.qualcomm.com>
Co-authored-by: Santhosh Kumar Ellendula <sellendu@hu-sellendu-lv.qualcomm.com>