Enhanced to generate and support text based Xpaths

[kherath17]

This PR Contains changes to generate text based xpaths and resolves below bug reported.

Changes done

1. Created a new elementcreator class to extract the innerText
2. Created a corresponding method to refer to the above elementCreator
3. Created a new method as constructXPath to generate a xpath
4. Introduced a new logic to resolve the locator in toLocator method by using constructXPath if elements.size() == 1 returns false

Eg:
By.xpath("//div[text()='Environment Configuration']")

Bug - #253

Note

This fix was tested for Kubernetes as well by simply overriding the hlm-web dependency found as a transitive dependency within healenium-appium for hlm-proxy