Function mutate_file 

pub async fn mutate_file(
    file_to_mutate: &str,
    touched_lines: Option<Vec<usize>>,
    pr_number: Option<u32>,
    one_mutant: bool,
    only_security_mutations: bool,
    range_lines: Option<(usize, usize)>,
    coverage: &Option<HashMap<String, Vec<usize>>>,
    is_unit_test: bool,
    skip_lines: &HashMap<String, Vec<usize>>,
    enable_ast_filtering: bool,
    custom_expert_rule: Option<String>,
) -> Result<()>