The available scanning modes are: 'r_project', 'renv', and 'r_libath'. The 'r_libpath' mode
simply performs all R project related scans at once. Emphasis is placed on scans of R related content.
Additional parsing and scanning modes will be added over time as needed. If a mode does not exist for
a particular purpose, alternate functions such as is_pkg_vulnerable() can be used with any list of
package names for ecosystems available in the OSV database.