Added Safari endpoint controllers

package-lock.json

src/controllers/apple-controller.ts

src/push-browser/apple-pushpackage-generator.ts

src/push-browser/safari_assets/icon_128x128.png

src/push-browser/safari_assets/icon_128x128@2x.png

src/push-browser/safari_assets/icon_16x16.png

src/push-browser/safari_assets/icon_16x16@2x.png

src/push-browser/safari_assets/icon_32x32.png

src/push-browser/safari_assets/icon_32x32@2x.png

src/services/apple-service.ts

src/services/impl/apple-service-impl.ts

src/services/impl/apple/delete-device-permission.ts

src/services/impl/apple/download-pushpackage.ts

src/services/impl/apple/register-device-permission.ts