Add support for dual-licensed projects
GitLab doesn't display the licenses in project header when dual-licensing. MIT/Apache-2.0 dual-licensing is popular in Rust's ecosystem. GitLab should support dual-licensed projects.
A dual licensed project will have two license files (e.g `LICENSE-MIT` and `LICENSE-APACHE` files). The `licensee` library appears to support dual licensed projects.
Example: https://gitlab.com/ricvelozo/brids-rs
### Proposal
Show both licenses on the project page
| Before | After |
| --- | --- |
|  |  |
Questions:
- where does it link to?
- what do we show when viewing one of the license files? do we show a link to the other license?
### Links / references
https://github.com/benbalter/licensee/pull/203
issue