Function parse_app_spec 

pub fn parse_app_spec(spec: &str) -> Result<AppSpec>

Resolve a raw app spec into an AppSpec. Mirrors JSS parseAppSpec.

Grammar (suffixes are optional and order-independent here, parsed rename-first then ref): <source>[#<ref>][=<dest>].

<source> resolution:

• full URL (http(s)://, git@, ssh://) → used verbatim
• org/repo → https://github.com/org/repo
• bare name → https://github.com/solid-apps/name