Add usage text, scdoc man page, and README Add usage text to the program, an scdoc man page template, and a README to the project. This is mainly so it's easier for anyone who wants to to use secenv. It's unlikely to be used by anyone other than me, but might as well be polite.
Rearrange argument parsing, add -T flag Rearrange argument parsing to no longer require the use of a -f flag. Now, any arguments following options are considered sops files until a `--` string is encountered. So, the new command-line is: secenv [OPTIONS] [FILES...] -- CMD... This is a little more convenient than using -f, since it means you can load multiple data files in. The template flag, -T, also allows you to pass flags on the CLI. This isn't really recommended because the process list exposes any secrets (the environment is also unsafe, but safer than the process list at least). So, this is more for convenience and working with programs that aren't friendly towards either loading encrypted data from files (ala foo --arg @<(sops -d ...)) or environment variables.