Enable having octal and hexadecimal escape characters in `toml` config
Support having octal and hexadecimal escape characters such as \x1b, \033 in toml configuration.
This could be done through adding a feature in the serde/toml crates.
ref. #2202
@ktff did you open an issue on toml crate?
@KannarFr No, but it should be straight forward to do. Also it's possible serde is the crate responsible for parsing the string, or even maybe something further in the dependency chain, so that would be a good thing to determine to avoid a chain of feature issues just linked one to another.
@binarylogic can you handle this issue? I'm not rust expert, but if required I can take time to learn :D.