build: drop pre-built cloudini_wasm.wasm from the repo

The 615 KB binary isn't imported anywhere — PointCloudConverter.tsx
loads ./cloudini_wasm_single.js (injected by the release workflow),
not the .wasm. Removing it cuts the checked-in blob and eliminates a
path where a stale build artifact could quietly drift out of sync.

.gitignore now covers both generated wasm files under src/ so they
can't be re-committed by accident during local dev.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: facontidavide

cloudini_foxglove/.gitignore

@@ -1,3 +1,5 @@
 dist/
 node_modules/
 *.foxe
+src/cloudini_wasm.wasm
+src/cloudini_wasm_single.js