Add support for uploading files from a content Uri

[hej2010]

New Feature / Enhancement Checklist

• I am not disclosing a vulnerability.
• I am not just asking a question.
• I have searched through existing issues.

Current Limitation

Currently a ParseFile can only be created/uploaded using a byte[] or a File.
When opening a file/document using an intent (https://developer.android.com/training/data-storage/shared/documents-files#open-file) the Uri can't always easily be converted into a File and it is often too large to store in a byte array.

Feature / Enhancement Description

Add support for uploading files from a content/document Uri, e.g. with new ParseFile(name, uri, contentType).

Example Use Case

Alternatives / Workarounds

Write the Uri data to a temp file and upload using new ParseFile(file).

3rd Party References

[parse-github-assistant]

Thanks for opening this issue!

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[parseplatformorg]

🎉 This change has been released in version 4.3.0