Add isRaw to StringLit
Add isRaw to StringLit

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