fix(android): add single/doubletap to scrollview TIMOB-13286

[m1ga]

JIRA: https://jira.appcelerator.org/browse/TIMOB-13286

example code

    var win = Ti.UI.createWindow({
        backgroundColor: 'white'
    });
    var scrollview = Ti.UI.createScrollView({
        layout: 'vertical',
        height: '90%',
        contentWidth: 'auto',
        contentHeight: 'auto',
        showVerticalScrollIndicator: true,
        touchEnabled: true,
        backgroundColor: 'red'
    });

    win.add(scrollview);
    scrollview.addEventListener('click', function() {
        console.log('click');
    });

    scrollview.addEventListener('singletap', function() {
        console.log('single tap occured');
    });

    scrollview.addEventListener('doubletap', function() {
        console.log('doubletap tap occured');
    });

    win.open();

[build]

	Fails
🚫	🔬 There are library changes, but no changes to the unit tests. That's OK as long as you're refactoring existing code, but will require an admin to merge this PR. Please see README.md#unit-tests for docs on unit testing.

	Messages
📖	💾 Here's the generated SDK zipfile.
📖	🎉 Another contribution from our awesome community member, m1ga! Thanks again for helping us make Titanium SDK better. 👍
📖	✊ The commits in this PR match our conventions! Feel free to Rebase and Merge this PR when ready.
📖	✅ All tests are passing Nice one! All 6653 tests are passing. (There are 700 skipped tests not included in that total)

Generated by 🚫 dangerJS against 888bab3

[sgtcoolguy]

CR and FR pass. I updated the commit message to match conventions. Once build passes I'll merge it in.