Add microcharts; remove deprecated react-vis

[ganapativs]

Added: microcharts

- [microcharts](https://github.com/ganapativs/microcharts) - [demo](https://microcharts.dev/charts) - [docs](https://microcharts.dev/docs) - Word-sized charts for inline text, table cells, and KPI cards; zero runtime dependencies, accessible by default, server-component safe.

Disclosure: I'm the author. Happy to reword or drop it if it isn't a fit.

It fills a gap in the Chart section — every current entry is a full-canvas charting library. microcharts covers the opposite case: charts small enough to sit inside a sentence, a table cell, or a KPI card. 106 chart types, MIT, dependencies: {} (CI-enforced), ~1–4 kB gzip static / ~2–7 kB interactive per chart, role="img" with an auto-generated natural-language summary on every chart, and hook-free static entries that render in a Server Component with zero client JS.

Checklist from CONTRIBUTING:

• Alphabetic order (placed between jscharting-react and react-chartist)
• Listed once
• Succinct, no flair
• No "React" in the description
• One line, no wrapping
• Demo link
• Docs link

Removed: react-vis

Per the "remove one un-awesome component" rule. This one is deprecated by its own maintainers rather than merely quiet — uber/react-vis DEPRECATED.md:

react-vis currently has no active maintainers. As such, we have decided to deprecate the library. This deprecation means that react-vis won't receive any patches or new features.

The README's maintenance badge reads maintenance: no (2020). The list already carries several well-maintained alternatives that cover the same ground (recharts, victory, echarts for react).

I deliberately did not propose removing react-sparklines, even though it's the least-maintained entry in the section, since it's the closest thing to a competitor for what I'm adding — that call should be yours, not mine. And if you'd rather keep react-vis listed, I'm glad to swap in a different removal or drop the deletion entirely.