Extend archive coverage

Deploy at least 2 additional loaders (of currently unsupported VCS/package formats) and 2 additional listers (of currently unsupported hosting platforms), expanding the coverage of the Software Heritage archive. Listers and loaders can be developed in house or contributed by external partners, e.g., via dedicated grants.

Migrated from T4079 (view on Phabricator)

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information