gitignore: keep shared .vscode configs

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

Author: nficano

.gitignore

@@ -2,12 +2,18 @@
 .gradle/
 build/
 **/build/
+bin/
+**/bin/
 !gradle/wrapper/gradle-wrapper.jar
 
 # IDE
 .idea/
 *.iml
-.vscode/
+.vscode/*
+!.vscode/settings.json
+!.vscode/extensions.json
+!.vscode/tasks.json
+!.vscode/launch.json
 *.iws
 *.ipr
 .classpath