changelog.md for @uptime.link/about.uptime.link

Changelog

Initial about.uptime.link website

Create uptime.link landing page with uptime monitoring focus
Add Hero section with port detection, local network scanning, status widgets features
Add Features section: Port Detection, Network Scanning, Status Widgets, Alerts, Service Discovery, Self-Host, SDK, Open Source
Add HowItWorks section: Install CLI, Scan Network, Configure Monitors, Track & Alert
Add documentation pages: Introduction, Quick Start, CLI, Configuration, SDK, Widgets, Detector
Configure JetBrains Mono as the primary font
Use emerald green color scheme for uptime monitoring branding