breaking(android): stop using CordovaUri helper class

[jcesarmobile]

Platforms affected

android

Motivation and Context

At the moment the plugin tries to guess (in a dirty way) the image path from the content url, but that's not really necessary since we know the path beforehand, and doesn't work at the moment since the path was changed in a previous PR causing #597

Description

probably breaking change since CordovaUri class says it's for Android 4.4.4 and lower support, but since cordova-android 9 won't support versions older than 5.1, I think we can remove the class and we also need to update the plugin to use Android X, which will require cordova-android 9.

What the PR does is to store the file path in a variable and use that variable to send the camera result instead of trying to guess the image path from the returned result from the camera intent, which was a dirty way of getting it (according to the method description) and which doesn't work since this was merged.

For that, it removes CordovaUri.java class and it's usages.
Saves image paths in a variable to return.
Changes the file_provider to use cache_files as the mentioned commit stores the images there.
Removes code used for Android 4.4 and older.

fixes #597

Testing

Tested on Android 5 and Android 9 devices with this code

navigator.camera.getPicture(onSuccess, onFail, { quality: 50, destinationType: Camera.DestinationType.FILE_URI });
    function onSuccess(imageURI) {
        alert(imageURI);
        document.getElementById("photoResult").src = imageURI;
    }
    function onFail(message) {
        alert('Failed because: ' + message);
    }

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary

[erisu]

Other then the comments, I think the rest is OK 👌

[erisu]

You might also be able to rebase with master to get the additional tests to pass.