[vycdev]

Adds a badge row to the README in the same style as Kromacut, plus a Patreon link in VS Code's Sponsor button.

• README badges: Marketplace version, installs, rating, CI build status, license, and Patreon.
  • The Marketplace badges use vsmarketplacebadges.dev, because shields.io has retired its visual-studio-marketplace badges (they now render as "retired badge").
  • The other badges use shields.io, like Kromacut.
• package.json: adds "sponsor": { "url": "https://www.patreon.com/cw/vycdev" }. VS Code shows a Sponsor button on the extension's page; older VS Code versions ignore the field.
• CHANGELOG: adds a line for the Sponsor button.

.github/FUNDING.yml already lists patreon: vycdev, so the GitHub repo Sponsor button is unchanged.

Verification

• Every badge URL returns a valid SVG. The Marketplace ones show the live 5.2.0, 172 installs, and 5/5.
• vsce package (3.9.2) succeeds, so the Marketplace accepts the badge image hosts.
• Prettier check passes.