Add focus checking methods to graybox

[pauliusguzas]

• atv - facing issues as webdriverio attribute focused does not change to true when element is focused, it always has value false. Also tried adding changed values of attributes to components in js of the app. But none of them seem to change the value returned in the app. Also tried wdio methods which return element color and other things but most of them are only implemented for browser automation
• tvos

[pauliusguzas]

flexn-io/create@main...feat/graybox-tv-focus-checking

[pauliusguzas]

    expectToBeFocusedById = async (selector: string) => {
        const element = await this.getElementById(selector);
        if (element) {
            await expect(element).toHaveAttribute('focused', 'true');
        }
    };

    expectToBeFocusedByText = async (selector: string) => {
        const element = await this.getElementByText(selector);
        if (element) {
            await expect(element).toHaveAttribute('focused', 'true');
        }
    };

    waitForFocusedById = async (selector: string) => {
        const element = await this.getElementById(selector);
        if (element) {
            await element.waitUntil(async function () {
                return (await element.getAttribute('focused')) === 'true';
            }, {
                timeout: 60000,
            });
        }
    };

    waitForFocusedByText = async (selector: string) => {
        const element = await this.getElementByText(selector);
        if (element) {
            await element.waitUntil(async function () {
                return (await element.getAttribute('focused')) === 'true';
            }, {
                timeout: 60000,
            });
        }
    };

[pauliusguzas]

@aurimasmi to test this:

1. pull https://github.com/flexn-io/create/tree/chore/focus-checking-e2e
2. do yarn bootstrap-clean
3. do yarn e2e-template-tvos - pass
4. do yarn e2e-template-androidtv - fail

To help development use appium inspector:

1. install this https://github.com/appium/appium-inspector
2. install appium globally: yarn global add appium
3. install appium drivers: appium driver install xcuitest && appium driver install uiautomator2
4. start appium server: appium
5. configure appium inspector like below and click "Start Session"
   
6. after navigating somewhere on simulator use this button on inspector to update app to latest state in inspector
   

P.S. https://github.com/flexn-io/graybox/tree/feat/tvs-focus-support here is branch with graybox updates