build: add .DS_store to .gitgnore
The following files were not being ignored:
deps/npm/node_modules/node-gyp/gyp/tools/.DS_Store deps/npm/node_modules/node-gyp/gyp/tools/Xcode/.DS_Store
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
The following files were not being ignored:
deps/npm/node_modules/node-gyp/gyp/tools/.DS_Store deps/npm/node_modules/node-gyp/gyp/tools/Xcode/.DS_Store