Add the printAst.ql contextual query for C++
Add the printAst.ql contextual query for C++

This query will be used by the VS Code extension for viewing
ASTs of C/C++ files.

github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql,github/codeql