v1.0.1 — vellum-ready release

Adds the artifacts vellum needs to package and distribute gomoku-rm:

• LICENSE (MIT)
• icon.png (256×256 board fragment with stones, generated by packaging/make_icon.py)
• packaging/VELBUILD — package recipe ready for vellum-dev/vellum PR

Release assets:

• gomoku-rm — armv7 ELF, ~2 MB, e_machine=2800
• icon.png — AppLoad icon
• external.manifest.json — AppLoad manifest with qtfb-shim env vars

Functional changes vs v1.0.0: none. Same engine, same scenes, same
vendored evdev/libremarkable patches. Bumped to 1.0.1 so the LICENSE
file (and other vellum prerequisites) is present at the tag the
VELBUILD source URLs reference.