added getHtml method, updated android config, remove block on long press webview android, fixed other issues

added onReceivedServerTrustAuthRequest and onReceivedClientCertRequest events to manage SSL requests, added clearSslPreferences and clearClientCertPreferences for Android, added nodejs_server_test_auth_basic_and_ssl for testing auth and ssl requests

updated android safe browsing, updated ios browser and SafariViewController options, added onSafeBrowsingHit event for android

Added ,  (available only for Android), Added ,  and  events to manage javascript popup dialogs only for Android now, added support for javascript dialogs popups for iOS

Added new WebView option minimumFontSize, Added new Android WebView options, Added new iOS WebView options, Added onGeolocationPermissionsShowPrompt event and GeolocationPermissionShowPromptResponse class (available only for Android), updated Android ContentBlocker, updated Android build.gradle compileSdkVersion 29

Updated onLoadResource event, Updated WebResourceResponse class, Deleted WebResourceRequest class, added useOnDownloadStart option, created webview options classes, added initial content blocking support

added onDownloadStart event, onLoadResourceCustomScheme event and resourceCustomSchemes option, onTargetBlank event and useOnTargetBlank option, code refactoring