Provide default set template as an option for --template

[Xarthisius]

Description

Provide a set of default templates as part of the package. They can be used by "name" instead of filepath.

[larsvilhuber]

@Xarthisius This has not been pulled in yet, right? Don't see it in https://github.com/transparency-certified/tro-utils/releases/tag/v0.1.2

[Xarthisius]

Nope, it's an open pull request (#3) waiting for a review since 10/2024