Detect browser language and use for Translate plugin "To" language

[schu96]

Description

The translation plugin's default "To" language is currently set to English. This should check the browser's language using navigator.language , then setting that language as the default "To" option

Expectation

Should expect the "To" language option field to select the user's browser language. If user's browser language does not have a translation model yet, revert the "To" language field to use English instead.

Stakeholders
@schu96

[DarshanCode2005]

Is this issue open for contribution?