build: Ignore TypeScript *.tsbuildinfo build cache

tsc --build emits incremental-build cache files (e.g.
packages/core/plugin/tsconfig.tsbuildinfo) that were untracked but not
ignored, so they could be committed by accident. Add a *.tsbuildinfo
ignore rule.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: antonis

.gitignore

@@ -91,6 +91,9 @@ node_modules.bak
 # API Extractor temp files
 /packages/core/temp/
 
+# TypeScript incremental build cache
+*.tsbuildinfo
+
 # Sentry React Native Monorepo
 /packages/core/README.md
 .env.sentry-build-plugin