feat(android): add fixedSize to RecyclerViews

[m1ga]

JIRA: https://jira.appcelerator.org/browse/AC-6635

Optional Description:

Since we are optimizing the performance of Androids ListViews/TableViews this might be another one:
Adding fixedSize to the ListView/TableView properties

const defaultTemplate = {
	childTemplates: [{
		type: "Ti.UI.View",
		properties: {
			layout: "horizontal",
			horizontalWrap: false,
			top: "5dp",
			left: "10dp",
			bottom: "5dp",
			right: "10dp",
			width: Ti.UI.FILL,
			height: Ti.UI.SIZE,
		},
		childTemplates: [{
			type: 'Ti.UI.Label',
			bindId: 'label',
		}, {
			type: 'Ti.UI.View',
			properties: {
				layout: "horizontal",
				horizontalWrap: true,
				width: Ti.UI.FILL,
				height: Ti.UI.SIZE,
			},
			childTemplates: [],
		}],
	}],
};
const templateImagePaths = [
	"/assets/images/tab1.png",
	"/assets/images/tab2.png",
];
for (let index = 0; index < 32; index++) {
	defaultTemplate.childTemplates[0].childTemplates[1].childTemplates.push({
		type: "Ti.UI.ImageView",
		properties: {
			image: templateImagePaths[index % templateImagePaths.length],
			left: "5dp",
			touchEnabled: false,
		},
	});
}

function createListViewSectionItems() {
	const items = [];
	for (let index = 1; index <= 200; index++) {
		items.push({ label: { text: `Row ${index}` } });
	}
	return items;
}

const window = Ti.UI.createWindow();
window.add(Ti.UI.createListView({
	templates: {
		template: defaultTemplate,
	},
	fixedSize: true,
	defaultItemTemplate: 'template',
	sections: [Ti.UI.createListSection({
		headerTitle: "ListView",
		items: createListViewSectionItems(),
	})],
}));
window.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.

	Warnings
⚠️	Commit 4b5db63d9e1d2ffac53f2ec2702039c54f2b1663 has a message "docs" giving 2 errors: subject may not be empty type may not be empty
⚠️	Commit 1a43fd5c90d759ba8f7705442208b6a47cf8233c has a message "docs" giving 2 errors: subject may not be empty type may not be empty

	Messages
📖	🚨 This PR has one or more commits with warnings/errors for commit messages not matching our configuration. You may want to squash merge this PR and edit the message to match our conventions, or ask the original developer to modify their history.
📖	✅ All tests are passing Nice one! All 19670 tests are passing. (There are 1157 skipped tests not included in that total)
📖	🎉 Another contribution from our awesome community member, m1ga! Thanks again for helping us make Titanium SDK better. 👍
📖	💾 Here's the generated SDK zipfile.

Generated by 🚫 dangerJS against 4b5db63

[garymathews]

CR: PASS
FT: PASS

Looks like you need to fix the commit messages for Danger to pass. e.g:

docs(android): include fixedSize property

[hansemannn]

Solid fix, thank you!