Cym - Move language selector to Top Right corner

[it3986]

Convention is that the Language Selector on multi-lingual websites is consistently in the Top Right corner.
On Desktop it is currently in the Top Right nav but is the left-most item and so not in this sweet-spot.
On Mobile it is currently buried in the hamburger nav so not instantly visible on a mobile device that the other language is available.

Same problem in both languages on any of the pages now available in both Welsh and English.

Guidance on this from the Office of the Welsh Language Comissioner is on page 57 of their guidance on Technology, Websites and Software:
https://www.welshlanguagecommissioner.wales/media/lxechbz0/technoleg-gwefannau-a-meddalwedd-technology-websites-and-software.pdf

Screenshot of anticipated lang switcher placement using https://cy.theyworkforyou.com/mss/?o=p as an example:

[it3986]

Screenshot of Language switcher within hamburger menu on mobile:

Screenshot of example of good practice (above hamburger menu) from https://naturalresources.wales/?lang=en