update travis build to use Xcode 11.0 (11A420a) and iOS 13 support

[hthetiot]

No description provided.

[hthetiot]

https://travis-ci.org/cordova-rtc/cordova-plugin-iosrtc/jobs/579741540#L1121

> cordova build ios
Cannot read property 'toLowerCase' of undefined
[ERROR] An error occurred while running subprocess cordova.
        
        cordova build ios exited with exit code 1.
        
        Re-running this command with the --verbose flag may provide more information.

Travis failed with XCode 11.

[hthetiot]

Cannot read property 'toLowerCase' of undefined
TypeError: Cannot read property 'toLowerCase' of undefined
    at /Users/travis/build/cordova-rtc/cordova-plugin-iosrtc/myApp/platforms/ios/cordova/lib/list-emulator-build-targets:54:45
    at Array.forEach (<anonymous>)
    at /Users/travis/build/cordova-rtc/cordova-plugin-iosrtc/myApp/platforms/ios/cordova/lib/list-emulator-build-targets:52:44
    at Array.reduce (<anonymous>)
    at /Users/travis/build/cordova-rtc/cordova-plugin-iosrtc/myApp/platforms/ios/cordova/lib/list-emulator-build-targets:50:57
    at Array.reduce (<anonymous>)
    at /Users/travis/build/cordova-rtc/cordova-plugin-iosrtc/myApp/platforms/ios/cordova/lib/list-emulator-build-targets:45:28
    at _fulfilled (/Users/travis/build/cordova-rtc/cordova-plugin-iosrtc/myApp/platforms/ios/cordova/node_modules/q/q.js:854:54)
    at /Users/travis/build/cordova-rtc/cordova-plugin-iosrtc/myApp/platforms/ios/cordova/node_modules/q/q.js:883:30
    at Promise.promise.promiseDispatch (/Users/travis/build/cordova-rtc/cordova-plugin-iosrtc/myApp/platforms/ios/cordova/node_modules/q/q.js:816:13)
[ERROR] An error occurred while running subprocess cordova.

[hthetiot]

Cannot read property 'toLowerCase' of undefined
TypeError: Cannot read property 'toLowerCase' of undefined
    at /Users/travis/build/cordova-rtc/cordova-plugin-iosrtc/myApp/platforms/ios/cordova/lib/list-emulator-build-targets:54:45
    at Array.forEach (<anonymous>)
    at /Users/travis/build/cordova-rtc/cordova-plugin-iosrtc/myApp/platforms/ios/cordova/lib/list-emulator-build-targets:52:44
    at Array.reduce (<anonymous>)
    at /Users/travis/build/cordova-rtc/cordova-plugin-iosrtc/myApp/platforms/ios/cordova/lib/list-emulator-build-targets:50:57
    at Array.reduce (<anonymous>)
    at /Users/travis/build/cordova-rtc/cordova-plugin-iosrtc/myApp/platforms/ios/cordova/lib/list-emulator-build-targets:45:28
    at _fulfilled (/Users/travis/build/cordova-rtc/cordova-plugin-iosrtc/myApp/platforms/ios/cordova/node_modules/q/q.js:854:54)
    at /Users/travis/build/cordova-rtc/cordova-plugin-iosrtc/myApp/platforms/ios/cordova/node_modules/q/q.js:883:30
    at Promise.promise.promiseDispatch (/Users/travis/build/cordova-rtc/cordova-plugin-iosrtc/myApp/platforms/ios/cordova/node_modules/q/q.js:816:13)

related apache/cordova-ios#427
related meteor/meteor#10673

[hthetiot]

related apache/cordova-ios#675

[hthetiot]

I will add Xcode 11 detection and if cordov-ios is bellow 5.0.1 possible display an message.

[hthetiot]

Using new Hook and cordova-ios 5+, Bridging-Header.h is properly detected and updated once.

/*
 Licensed to the Apache Software Foundation (ASF) under one
 or more contributor license agreements.  See the NOTICE file
 distributed with this work for additional information
 regarding copyright ownership.  The ASF licenses this file
 to you under the Apache License, Version 2.0 (the
 "License"); you may not use this file except in compliance
 with the License.  You may obtain a copy of the License at
 http://www.apache.org/licenses/LICENSE-2.0
 Unless required by applicable law or agreed to in writing,
 software distributed under the License is distributed on an
 "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 KIND, either express or implied.  See the License for the
 specific language governing permissions and limitations
 under the License.
 */
//
//  Bridging-Header.h
//  __PROJECT_NAME__
//
//  Created by ___FULLUSERNAME___ on ___DATE___.
//  Copyright ___ORGANIZATIONNAME___ ___YEAR___. All rights reserved.
//
//
//  Use this file to import your target's public headers that you would like to expose to Swift.
//

#import <Cordova/CDV.h>

#import "cordova-plugin-iosrtc-Bridging-Header.h"

[hthetiot]

iosrtc-swift-support.js [INFO] cordova-plugin-iosrtc is checking issues in the generated project files:
iosrtc-swift-support.js [INFO] - Minimum "iOS Deployment Target" and "Deployment Target" to: "10.2"
iosrtc-swift-support.js [INFO] - "Runpath Search Paths" to: "@executable_path/Frameworks"
iosrtc-swift-support.js [INFO] - "Objective-C Bridging Header" to: "Cordova iOSRTC Sample/Plugins/cordova-plugin-iosrtc/cordova-plugin-iosrtc-Bridging-Header.h"
iosrtc-swift-support.js [INFO] - "ENABLE_BITCODE" set to: "NO"
iosrtc-swift-support.js [INFO] - "SWIFT_VERSION" set to: "4.2"
iosrtc-swift-support.js [INFO] ".pbxproj" project file found: ./platforms/ios/Cordova iOSRTC Sample.xcodeproj/project.pbxproj
iosrtc-swift-support.js [INFO] ".xcconfig" project file found: ./platforms/ios/cordova/build.xcconfig
iosrtc-swift-support.js [INFO] checking file: ./platforms/ios/cordova/build.xcconfig
iosrtc-swift-support.js [INFO] file is correct: ./platforms/ios/cordova/build.xcconfig
iosrtc-swift-support.js [INFO] checking file: ./platforms/ios/Cordova iOSRTC Sample.xcodeproj/project.pbxproj
iosrtc-swift-support.js [INFO] file is correct: ./platforms/ios/Cordova iOSRTC Sample.xcodeproj/project.pbxproj
Error: Cannot read property 'toLowerCase' of undefined

Using cordova-ios@4 may result in this issue, use cordova-ios 5+

cordova platform remove ios
cordova platform add ios@5