add CI/CD pipeline tooling (Makefile, Woodpecker, metadata)

Adapted from tools_build/phaser-tools for the Vite + TypeScript setup:
the web bundle comes from npm ci + npm run build instead of source
concatenation, otherwise the standard ci-version/ci-export/ci-upload/
ci-update flow applies (platform=phaser).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

metadata.json

@@ -0,0 +1,9 @@
+{
+  "name": "trickster-tiles",
+  "title": "Trickster Tiles",
+  "author": "Teletype Games",
+  "desc": "A small pixel-art platformer: hop, jump, and outwit moving spikes and disappearing tiles across 10 levels. Made with Phaser 3.",
+  "site": "https://git.teletypegames.org/games/trickster-tiles",
+  "license": "MIT License",
+  "version": "0.1.0"
+}