Add helpful string/byte wrappers for secrets and external data#188
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Add helpful string/byte wrappers for secrets and external data#188
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The
SecretandRawSecrettypes help with keeping data from being leaked accidentally in a program, for example viafmt::Debugandfmt::Display. Additionally, they always zero their memory on drop. (The latter is best effort, since the underlying types can reallocate.)MaybeExternalis an enum to load a String/Bytes/Secret/RawSecret value either inline (from the config file itself) or from an external source (environment variables or file system). This is especially useful for containerized applications, where config is routinely split between many files or injected via environment variables. The source is selected in the main config file.