Statistics counter for landing page

Idea

We could add some counters to the landing page that show statistics about the RSD. These might specifically be:

• number of software entries
• number of partnering organisations (i.e. without helmholtz institutes)
• software citation count
• contributor count

Benefit

Illustrate:

• number of software entries in general
• show significance of citations
• show that HGF is working together with plenty of external organisations/partners

Implementation

Most of the data is already available via

https://helmholtz.software/api/v1/rpc/homepage_counts

{
    "software_cnt": 74,
    "project_cnt": 4,
    "organisation_cnt": 49,
    "contributor_cnt": 215,
    "software_mention_cnt": 403
}

Although, organisation_cnt includes HGF institutes.