Add taint models for `fmt.Fprintf` and `io.WriteString`.
Add taint models for `fmt.Fprintf` and `io.WriteString`.

github/codeql-go,github/codeql-go,github/codeql-go,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-go,github/codeql