Render phone number input as tel(telephone) type

[abdellahrk]

This PR fixed #153

[odolbeau]

Thanks for your contribution @abdellahrk! 🙏

This is definitively a change we want on this bundle BUT :

• If the bug Tel input type not taken into account in twig #153 is confirmed, this PR could lead to some problems. People using this bundle will see their <input type="text" /> transformed in an <input type="tel" /> which could break their design or a script mapped to all input[type="string"] for example). In this case, we should consider releasing a new major version and document this change in a ̀UPGRADE.md` file.
• If the bug is not confirmed (or limited to a few projects using special dependencies), I think this PR can be merged without problem directly on the current version.

WDYT @abdellahrk @Nek-?

[abdellahrk]

Thank you for the comment @odolbeau,
I think @Nek- 's input will be invaluable.