2026 Guix Foundation Update (for Guix Days)

Update for Guix Days 2026 (January 2026) on Guix Foundation activities and status. Covers a bit about what Guix Foundation is and how it's a Sponsor organisation for GNU Guix along with FSF. Then the recent fundraising that we've been doing. Finally, runs through the proposed budget for paying for infrastructure and promoting Guix in 2026.