wayland/text-input-v1: Implement basic text-input-v1 support

This is based on the text-input-v3 implementation we have by using the same logic but adapted to text-input-v1.

This is not a complete text-input-v1 implementation, some are ignored because We don't have equivalence in input method implementation in Clutter or they are not required to input languages with input methods.

Below is the original commit message:

This commit makes input methods work in text-input-v1 only clients (mostly Chromium/Electron based apps with Ozone Wayland), which is needed by users who needs IME to input their languages, like Chinese, Japanese or Korean.

Closes #3200.